UNITED STATES
                             SECURITIES AND EXCHANGE
                                   COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM N-PX

               ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED
                          MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-03129

           Morgan Stanley Natural Resource Development Securities Inc.
           -----------------------------------------------------------
               (Exact name of registrant as specified in charter)

  522 Fifth Avenue, New York, New York                                   10036
--------------------------------------------------------------------------------
(Address of principal executive offices)                              (Zip code)

                               Amy Doberman, Esq.
                                Managing Director
                     Morgan Stanley Investment Advisors Inc.
                                522 Fifth Avenue
                            New York, New York 10036
                     ---------------------------------------
                     (Name and address of agent for service)

Registrant's telephone number, including area code: 800-869-6397

Date of fiscal year end: 2/28

Date of reporting period: 7/1/06 - 6/30/07



******************************* FORM N-Px REPORT *******************************

ICA File Number: 811-03129
Reporting Period: 07/01/2006 - 06/30/2007
Morgan Stanley Natural Resource Development Securities, Inc.









========= MORGAN STANLEY NATURAL RESOURCE DEVELOPMENT SECURITIES INC. ==========


BARRICK GOLD CORP.

Ticker:       ABX            Security ID:  067901108
Meeting Date: MAY 2, 2007    Meeting Type: Annual/Special
Record Date:  MAR 14, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director H. L. Beck                 For       For        Management
1.2   Elect Director C. W. D. Birchall          For       For        Management
1.3   Elect Director D. J. Carty                For       For        Management
1.4   Elect Director G. Cisneros                For       Withhold   Management
1.5   Elect Director M. A. Cohen                For       For        Management
1.6   Elect Director P. A. Crossgrove           For       For        Management
1.7   Elect Director J. W. Crow                 For       For        Management
1.8   Elect Director R. M. Franklin             For       For        Management
1.9   Elect Director P. C. Godsoe               For       Withhold   Management
1.10  Elect Director J. B. Harvey               For       For        Management
1.11  Elect Director B. Mulroney                For       For        Management
1.12  Elect Director A. Munk                    For       For        Management
1.13  Elect Director P. Munk                    For       For        Management
1.14  Elect Director S. J. Shapiro              For       For        Management
1.15  Elect Director G. C. Wilkins              For       For        Management
2     Approve PricewaterhouseCoopers LLP as     For       For        Management
      Auditors and Authorize Board to Fix
      Remuneration of Auditors
3     Amend Stock Option Plan                   For       For        Management


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BJ SERVICES COMPANY

Ticker:       BJS            Security ID:  055482103
Meeting Date: JAN 30, 2007   Meeting Type: Annual
Record Date:  DEC 8, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Don D. Jordan              For       For        Management
1.2   Elect Director William H. White           For       For        Management


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CHESAPEAKE ENERGY CORP.

Ticker:       CHK            Security ID:  165167107
Meeting Date: JUN 8, 2007    Meeting Type: Annual
Record Date:  APR 16, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Frank Keating              For       For        Management
1.2   Elect Director Merrill A. Miller, Jr.     For       For        Management
1.3   Elect Director Frederick B. Whittemore    For       For        Management
2     Amend Omnibus Stock Plan                  For       For        Management
3     Amend Non-Employee Director Stock Option  For       Against    Management
      Plan


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CHEVRON CORPORATION

Ticker:       CVX            Security ID:  166764100
Meeting Date: APR 25, 2007   Meeting Type: Annual
Record Date:  MAR 12, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director Samuel H. Armacost         For       For        Management
2     Elect Director Linnet F. Deily            For       For        Management
3     Elect Director Robert E. Denham           For       For        Management
4     Elect Director Robert J. Eaton            For       For        Management
5     Elect Director Sam Ginn                   For       For        Management
6     Elect Director Franklyn G. Jenifer        For       For        Management
7     Elect Director Sam Nunn                   For       For        Management
8     Elect Director David J. O'Reilly          For       For        Management
9     Elect Director Donald B. Rice             For       For        Management
10    Elect Director Peter J. Robertson         For       For        Management
11    Elect Director Kevin W. Sharer            For       For        Management
12    Elect Director Charles R. Shoemate        For       For        Management
13    Elect Director Ronald D. Sugar            For       For        Management
14    Elect Director Carl Ware                  For       For        Management
15    Ratify Auditors                           For       For        Management
16    Reduce Supermajority Vote Requirement     For       For        Management
17    Adopt Human Rights Policy                 Against   Against    Shareholder
18    Adopt Greenhouse Gas Emission Reduction   Against   Against    Shareholder
      Goals
19    Adopt Animal Welfare Policy               Against   Against    Shareholder
20    Separate Chairman and CEO Positions       Against   Against    Shareholder
21    Approve/Amend Terms of Existing Poison    Against   Against    Shareholder
      Pill
22    Report on Market Specific Environmental   Against   Against    Shareholder
      Laws


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CHICAGO BRIDGE & IRON CO.

Ticker:       CBI            Security ID:  167250109
Meeting Date: JUL 28, 2006   Meeting Type: Annual
Record Date:  JUN 9, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     ELECTION OF L. RICHARD FLURY              For       For        Management
2     ELECTION OF DAVID P. BORDAGES             Against   Against    Management
3     ELECTION OF VINCENT L. KONTNY             For       For        Management
4     ELECTION OF SAMUEL C. LEVENTRY            Against   Against    Management
5     ELECTION OF PHILIP K. ASHERMAN            For       For        Management
6     ELECTION OF LUCIANO REYES                 Against   Against    Management
7     TO ELECT CHICAGO BRIDGE & IRON COMPANY    For       Against    Management
      B.V. AS A MEMBER OF THE MANAGEMENT BOARD
8     TO ELECT LEALAND FINANCE COMPANY B.V. AS  Against   Against    Management
      A MEMBER OF THE MANAGEMENT BOARD
9     TO AUTHORIZE THE PREPARATION OF THE       For       For        Management
      ANNUAL ACCOUNTS AND THE ANNUAL REPORT
10    TO DISCHARGE THE MEMBERS OF THE           For       For        Management
      MANAGEMENT BOARD FROM LIABILITY IN
      RESPECT OF THE EXERCISE OF THEIR DUTIES
11    TO DISCHARGE THE MEMBERS OF THE           For       For        Management
      SUPERVISORY BOARD FROM LIABILITY IN
      RESPECT OF THE EXERCISE OF THEIR DUTIES
12    TO RESOLVE ON THE FINAL DIVIDEND FOR THE  For       For        Management
      YEAR ENDED DECEMBER 31, 2005
13    TO DETERMINE THE COMPENSATION OF THE      For       For        Management
      NON-EXECUTIVE CHAIRMAN OF THE SUPERVISORY
      BOARD
14    TO APPROVE THE EXTENSION OF THE AUTHORITY For       For        Management
      OF THE MANAGEMENT BOARD TO REPURCHASE UP
      TO 10% OF THE ISSUED SHARE CAPITAL
15    TO APPROVE THE EXTENSION OF THE AUTHORITY For       For        Management
      OF THE SUPERVISORY BOARD TO ISSUE AND/OR
      GRANT RIGHTS TO ACQUIRE SHARES
16    TO APPOINT ERNST & YOUNG LLP OUR          For       For        Management
      INDEPENDENT REGISTERED PUBLIC ACCOUNTING
      FIRM FOR THE YEAR ENDING DECEMBER 31,
      2006.


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CHICAGO BRIDGE & IRON CO.

Ticker:       CBI            Security ID:  167250109
Meeting Date: MAY 10, 2007   Meeting Type: Annual
Record Date:  APR 2, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     TO ELECT A) JERRY H. BALLENGEE AS MEMBER  Against   For        Management
      OF THE SUPERVISORY BOARD SELECT THE FOR
      OPTION. TO ELECT B) DAVID P. BORDAGES AS
      MEMBER OF THE SUPERVISORY BOARD SELECT
      THE AGAINST OPTION. TO ABSTAIN FROM
      VOTING ON EITHER NOMINEE SELECT THE
      ABSTAIN OPTION.
2     TO ELECT C) MICHAEL L. UNDERWOOD AS       Against   For        Management
      MEMBER OF THE SUPERVISORY BOARD SELECT
      THE FOR OPTION. TO ELECT D) SAMUEL C.
      LEVENTRY AS MEMBER OF THE SUPERVISORY
      BOARD SELECT THE AGAINST OPTION. TO
      ABSTAIN FROM VOTING ON EITHER NOMINEE
      SELECT THE ABSTAIN OPTION.
3     TO AUTHORIZE THE PREPARATION OF THE       For       For        Management
      ANNUAL ACCOUNTS AND THE ANNUAL REPORT AND
      TO ADOPT THE DUTCH STATUTORY ANNUAL
      ACCOUNTS.
4     TO DISCHARGE THE MEMBERS OF THE           For       For        Management
      MANAGEMENT BOARD FROM LIABILITY IN
      RESPECT OF THE EXERCISE OF THEIR DUTIES.
5     TO DISCHARGE THE MEMBERS OF THE           For       For        Management
      SUPERVISORY BOARD FROM LIABILITY IN
      RESPECT OF THE EXERCISE OF THEIR DUTIES.
6     TO RESOLVE ON THE FINAL DIVIDEND FOR THE  For       For        Management
      YEAR ENDED DECEMBER 31, 2006.
7     TO APPROVE THE EXTENSION OF THE AUTHORITY For       For        Management
      OF THE MANAGEMENT BOARD TO REPURCHASE UP
      TO 10% OF THE ISSUED SHARE CAPITAL OF THE
      COMPANY UNTIL NOVEMBER 10, 2008.
8     TO APPROVE THE EXTENSION OF THE AUTHORITY For       For        Management
      OF THE SUPERVISORY BOARD TO ISSUE AND/OR
      GRANT RIGHTS TO ACQUIRE SHARES
9     TO APPOINT ERNST & YOUNG LLP OUR          For       For        Management
      INDEPENDENT REGISTERED PUBLIC ACCOUNTING
      FIRM FOR THE YEAR ENDING DECEMBER 31,
      2007.


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CONOCOPHILLIPS

Ticker:       COP            Security ID:  20825C104
Meeting Date: MAY 9, 2007    Meeting Type: Annual
Record Date:  MAR 12, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director James E. Copeland, Jr.     For       For        Management
2     Elect Director Kenneth M. Duberstein      For       For        Management
3     Elect Director Ruth R. Harkin             For       For        Management
4     Elect Director William R. Rhodes          For       For        Management
5     Elect Director J. Stapleton Roy           For       For        Management
6     Elect Director William E. Wade, Jr.       For       For        Management
7     Ratify Auditors                           For       For        Management
8     Report on Political Contributions         Against   Against    Shareholder
9     Report on Renewable Energy Sources        Against   Against    Shareholder
10    Require Director Nominee Qualifications   Against   Against    Shareholder
11    Report on Environmental Damage from       Against   Against    Shareholder
      Drilling in the National Petroleum
      Reserve
12    Report on Indigenous Peoples Rights       Against   Against    Shareholder
      Policies
13    Report on Community Impact of Operations  Against   Against    Shareholder


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DEVON ENERGY CORP.

Ticker:       DVN            Security ID:  25179M103
Meeting Date: JUN 6, 2007    Meeting Type: Annual
Record Date:  APR 9, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Thomas F. Ferguson         For       For        Management
1.2   Elect Director David M. Gavrin            For       For        Management
1.3   Elect Director John Richels               For       For        Management
2     Ratify Auditors                           For       For        Management


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DOW CHEMICAL COMPANY, THE

Ticker:       DOW            Security ID:  260543103
Meeting Date: MAY 10, 2007   Meeting Type: Annual
Record Date:  MAR 12, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Arnold A. Allemang         For       For        Management
1.2   Elect Director Jacqueline K. Barton       For       For        Management
1.3   Elect Director James A. Bell              For       For        Management
1.4   Elect Director Jeff M. Fettig             For       For        Management
1.5   Elect Director Barbara H. Franklin        For       For        Management
1.6   Elect Director John B. Hess               For       For        Management
1.7   Elect Director Andrew N. Liveris          For       For        Management
1.8   Elect Director Geoffery E. Merszei        For       For        Management
1.9   WITHDRAWN                                 None      Withhold   Management
1.10  Elect Director James M. Ringler           For       For        Management
1.11  Elect Director Ruth G. Shaw               For       For        Management
1.12  Elect Director Paul G. Stern              For       For        Management
2     Ratify Auditors                           For       For        Management
3     Reduce Supermajority Vote Requirement     For       For        Management
4     Report on Remediation Policies in Bhopal  Against   Against    Shareholder
5     Report on Genetically Modified Organisms  Against   Against    Shareholder
6     Report on Environmental Remediation       Against   Against    Shareholder
7     Evaluate Potential Links Between Company  Against   Against    Shareholder
      Products and Asthma


--------------------------------------------------------------------------------

ENSCO INTERNATIONAL, INC.

Ticker:       ESV            Security ID:  26874Q100
Meeting Date: MAY 22, 2007   Meeting Type: Annual
Record Date:  MAR 26, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director David M. Carmichael        For       For        Management
2     Elect Director Thomas L. Kelly II         For       For        Management
3     Elect Director Rita M. Rodriguez          For       For        Management
4     Ratify Auditors                           For       For        Management
5     Other Business                            For       Against    Management


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EOG RESOURCES, INC.

Ticker:       EOG            Security ID:  26875P101
Meeting Date: APR 24, 2007   Meeting Type: Annual
Record Date:  MAR 1, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director George A. Alcorn           For       For        Management
1.2   Elect Director Charles R. Crisp           For       For        Management
1.3   Elect Director Mark G. Papa               For       For        Management
1.4   Elect Director Edmund P. Segner, III      For       For        Management
1.5   Elect Director William D. Stevens         For       For        Management
1.6   Elect Director H. Leighton Steward        For       For        Management
1.7   Elect Director Donald F. Textor           For       Withhold   Management
1.8   Elect Director Frank G. Wisner            For       For        Management
2     Ratify Auditors                           For       For        Management


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EXXON MOBIL CORP.

Ticker:       XOM            Security ID:  30231G102
Meeting Date: MAY 30, 2007   Meeting Type: Annual
Record Date:  APR 5, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Michael J. Boskin          For       For        Management
1.2   Elect Director William W. George          For       For        Management
1.3   Elect Director James R. Houghton          For       For        Management
1.4   Elect Director William R. Howell          For       For        Management
1.5   Elect Director Reatha Clark King          For       For        Management
1.6   Elect Director Philip E. Lippincott       For       For        Management
1.7   Elect Director Marilyn Carlson Nelson     For       For        Management
1.8   Elect Director Samuel J. Palmisano        For       For        Management
1.9   Elect Director Steven S Reinemund         For       For        Management
1.10  Elect Director Walter V. Shipley          For       For        Management
1.11  Elect Director J. Stephen Simon           For       For        Management
1.12  Elect Director Rex W. Tillerson           For       For        Management
2     Ratify Auditors                           For       For        Management
3     Restore or Provide for Cumulative Voting  Against   Against    Shareholder
4     Amend Articles/Bylaws/Charter -- Call     Against   For        Shareholder
      Special Meetings
5     Separate Chairman and CEO Positions       Against   For        Shareholder
6     Initiate Payment of Cash Dividend         Against   Against    Shareholder
7     Advisory Vote to Ratify Named Executive   Against   For        Shareholder
      Officers' Compensation
8     Company-Specific- Amend Article IX of the Against   Against    Shareholder
      Corporation's by-laws
9     Review Executive Compensation             Against   Against    Shareholder
10    Limit Executive Compensation              Against   Against    Shareholder
11    Claw-back of Payments under Restatements  Against   For        Shareholder
12    Report on Political Contributions         Against   Against    Shareholder
13    Amend Equal Employment Opportunity Policy Against   For        Shareholder
      to Prohibit Discrimination Based on
      Sexual Orientation
14    Report on Environmental Accountability    Against   Against    Shareholder
15    Report on Emission Reduction Goals        Against   Against    Shareholder
16    Report on Carbon Dioxide Emissions        Against   Against    Shareholder
      Information at Gas Stations
17    Adopt Policy to Increase Renewable Energy Against   Against    Shareholder
      Portfolio


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FREEPORT-MCMORAN COPPER & GOLD INC.

Ticker:       FCX            Security ID:  35671D857
Meeting Date: MAR 14, 2007   Meeting Type: Special
Record Date:  FEB 12, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Increase Authorized Common Stock          For       For        Management
2     Issue Shares in Connection with an        For       For        Management
      Acquisition
3     Adjourn Meeting                           For       For        Management


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GLOBALSANTAFE CORPORATION (FORMERLY SANTA FE INTERNATIONAL CORP)

Ticker:       GSF            Security ID:  G3930E101
Meeting Date: JUN 7, 2007    Meeting Type: Annual
Record Date:  APR 9, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect  Director Edward R. Muller          For       For        Management
1.2   Elect  Director John L. Whitmire          For       For        Management
2     Ratify Auditors                           For       For        Management


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HALLIBURTON CO.

Ticker:       HAL            Security ID:  406216101
Meeting Date: MAY 16, 2007   Meeting Type: Annual
Record Date:  MAR 19, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director Kathleen M. Bader          For       For        Management
2     Elect Director Alan M. Bennett            For       For        Management
3     Elect Director James R. Boyd              For       For        Management
4     Elect Director Milton Carroll             For       For        Management
5     Elect Director Robert L. Crandall         For       For        Management
6     Elect Director Kenneth T. Derr            For       For        Management
7     Elect Director S. Malcolm Gillis          For       For        Management
8     Elect Director W. R. Howell               For       For        Management
9     Elect Director David J. Lesar             For       For        Management
10    Elect Director J. Landis Martin           For       For        Management
11    Elect Director Jay A. Precourt            For       For        Management
12    Elect Director Debra L. Reed              For       For        Management
13    Ratify Auditors                           For       For        Management
14    Review Human Rights Policies              Against   Against    Shareholder
15    Report on Political Contributions         Against   Against    Shareholder
16    Amend Terms of Existing Poison Pill       Against   For        Shareholder


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HELIX ENERGY SOLUTIONS INC

Ticker:       HLX            Security ID:  42330P107
Meeting Date: MAY 7, 2007    Meeting Type: Annual
Record Date:  MAR 30, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Owen Kratz                 For       For        Management
1.2   Elect Director John V. Lovoi              For       For        Management
1.3   Elect Director Bernard J. Duroc-Danner    For       Withhold   Management


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INTERNATIONAL PAPER CO.

Ticker:       IP             Security ID:  460146103
Meeting Date: MAY 7, 2007    Meeting Type: Annual
Record Date:  MAR 16, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Directors David J. Bronczek         For       For        Management
1.2   Elect Directors Martha F. Brooks          For       For        Management
1.3   Elect Directors Lynn Laverty Elsenhans    For       For        Management
1.4   Elect Directors John L. Townsend, III     For       Withhold   Management
2     Ratify Auditors                           For       For        Management
3     Require a Majority Vote for the Election  For       For        Shareholder
      of Directors


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MARATHON OIL CORP

Ticker:       MRO            Security ID:  565849106
Meeting Date: APR 25, 2007   Meeting Type: Annual
Record Date:  FEB 26, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director Charles F. Bolden, Jr.     For       For        Management
2     Elect Director Charles R. Lee             For       For        Management
3     Elect Director Dennis H. Reilley          For       For        Management
4     Elect Director John W. Snow               For       For        Management
5     Elect Director Thomas J. Usher            For       For        Management
6     Ratify Auditors                           For       For        Management
7     Approve Omnibus Stock Plan                For       For        Management
8     Reduce Supermajority Vote Requirement     For       For        Management
9     Increase Authorized Common Stock          For       For        Management


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MEADWESTVACO CORP.

Ticker:       MWV            Security ID:  583334107
Meeting Date: APR 30, 2007   Meeting Type: Annual
Record Date:  MAR 1, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director James M. Kilts             For       For        Management
1.2   Elect Director Douglas S. Luke            For       For        Management
1.3   Elect Director Robert C. McCormack        For       For        Management
1.4   Elect Director Edward M. Straw            For       For        Management
1.5   Elect Director Jane L. Warner             For       For        Management
2     Ratify Auditors                           For       For        Management
3     Require a Majority Vote for the Election  Against   For        Shareholder
      of Directors
4     Submit Shareholder Rights Plan (Poison    Against   For        Shareholder
      Pill) to Shareholder Vote


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MONSANTO CO.

Ticker:       MON            Security ID:  61166W101
Meeting Date: JAN 17, 2007   Meeting Type: Annual
Record Date:  NOV 20, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect  Director Frank V. Atlee III        For       For        Management
1.2   Elect  Director Arthur H. Harper          For       For        Management
1.3   Elect  Director Gwendolyn S. King         For       For        Management
1.4   Elect  Director Sharon R. Long, Ph.D.     For       For        Management
2     Ratify Auditors                           For       For        Management
3     Separate Chairman and CEO Positions       Against   Against    Shareholder


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NABORS INDUSTRIES, LTD.

Ticker:       NBR            Security ID:  G6359F103
Meeting Date: JUN 5, 2007    Meeting Type: Annual
Record Date:  APR 5, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect  Director Alexander M. Knaster      For       Against    Management
1.2   Elect  Director James L. Payne            For       Against    Management
1.3   Elect  Director Hans W. Schmidt           For       Against    Management
2     Ratify Auditors                           For       For        Management
3     SHAREHOLDER PROPOSAL TO PERMIT            Against   For        Shareholder
      SHAREHOLDERS TO VOTE ON AN ADVISORY
      RESOLUTION TO RATIFY THE COMPENSATION OF
      THE NAMED EXECUTIVE OFFICERS OF THE
      COMPANY.
4     SHAREHOLDER PROPOSAL TO ADOPT A PAY FOR   Against   For        Shareholder
      SUPERIOR PERFORMANCE STANDARD IN THE
      COMPANY S EXECUTIVE COMPENSATION PLAN FOR
      SENIOR EXECUTIVES.


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NATIONAL OILWELL VARCO, INC.

Ticker:       NOV            Security ID:  637071101
Meeting Date: JUN 5, 2007    Meeting Type: Annual
Record Date:  APR 13, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Ben A. Guill               For       For        Management
1.2   Elect Director Roger L. Jarvis            For       For        Management
1.3   Elect Director Eric L. Mattson            For       For        Management
2     Ratify Auditors                           For       For        Management


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NEWMONT MINING CORP. (HOLDING COMPANY)

Ticker:       NEM            Security ID:  651639106
Meeting Date: APR 24, 2007   Meeting Type: Annual
Record Date:  FEB 27, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Glen A. Barton             For       Withhold   Management
1.2   Elect Director Vincent A. Calarco         For       For        Management
1.3   Elect Director Noreen Doyle               For       For        Management
1.4   Elect Director Veronica M. Hagen          For       For        Management
1.5   Elect Director Michael S. Hamson          For       For        Management
1.6   Elect Director Pierre Lassonde            For       For        Management
1.7   Elect Director Robert J. Miller           For       For        Management
1.8   Elect Director Wayne W. Murdy             For       For        Management
1.9   Elect Director Robin A. Plumbridge        For       For        Management
1.10  Elect Director John B. Prescott           For       Withhold   Management
1.11  Elect Director Donald C. Roth             For       Withhold   Management
1.12  Elect Director James V. Taranik           For       For        Management
2     Ratify Auditors                           For       For        Management
3     Report on Impact of Operations in         Against   Against    Shareholder
      Indonesia
4     Report on Policies related to Public      For       For        Shareholder
      Opposition to Mining Operations
5     Separate Chairman and CEO Positions       Against   For        Shareholder


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NOBLE CORPORATION

Ticker:       NE             Security ID:  G65422100
Meeting Date: APR 26, 2007   Meeting Type: Annual
Record Date:  MAR 1, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect  Director Michael A. Cawley         For       For        Management
1.2   Elect  Director Luke R. Corbett           For       For        Management
1.3   Elect  Director Jack E. Little            For       For        Management
2     Ratify Auditors                           For       For        Management


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OCCIDENTAL PETROLEUM CORP.

Ticker:       OXY            Security ID:  674599105
Meeting Date: MAY 4, 2007    Meeting Type: Annual
Record Date:  MAR 15, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director Spencer Abraham            For       For        Management
2     Elect Director Ronald W. Burkle           For       For        Management
3     Elect Director John S. Chalsty            For       Against    Management
4     Elect Director Edward P. Djerejian        For       For        Management
5     Elect Director R. Chad Dreier             For       For        Management
6     Elect Director John E. Feick              For       For        Management
7     Elect Director Ray R. Irani               For       For        Management
8     Elect Director Irvin W. Maloney           For       For        Management
9     Elect Director Rodolfo Segovia            For       For        Management
10    Elect Director Aziz D. Syriani            For       For        Management
11    Elect Director Rosemary Tomich            For       For        Management
12    Elect Director Walter L. Weisman          For       For        Management
13    Ratify Auditors                           For       For        Management
14    Amend Omnibus Stock Plan                  For       Against    Management
15    Publish a Scientific Global Warming       Against   Against    Shareholder
      Report
16    Advisory Vote to Ratify Named Executive   Against   For        Shareholder
      Officers Compensation
17    Performance-Based and/or Time-Based       Against   Against    Shareholder
      Equity Awards


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PATTERSON-UTI  ENERGY INC.

Ticker:       PTEN           Security ID:  703481101
Meeting Date: JUL 12, 2006   Meeting Type: Annual
Record Date:  JUN 8, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Mark S. Siegel             For       For        Management
1.2   Elect Director Cloyce A. Talbott          For       For        Management
1.3   Elect Director Kenneth N. Berns           For       For        Management
1.4   Elect Director Robert C. Gist             For       For        Management
1.5   Elect Director Curtis W. Huff             For       For        Management
1.6   Elect Director Terry H. Hunt              For       For        Management
1.7   Elect Director Kenneth R. Peak            For       For        Management
1.8   Elect Director Nadine C. Smith            For       For        Management


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PEABODY ENERGY CORP.

Ticker:       BTU            Security ID:  704549104
Meeting Date: MAY 1, 2007    Meeting Type: Annual
Record Date:  MAR 9, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director William A. Coley           For       For        Management
1.2   Elect Director Irl F. Engelhardt          For       For        Management
1.3   Elect Director William C. Rusnack         For       For        Management
1.4   Elect Director John F. Turner             For       Withhold   Management
1.5   Elect Director Alan H. Washkowitz         For       Withhold   Management
2     Ratify Auditors                           For       For        Management
3     Declassify the Board of Directors         Against   For        Shareholder


--------------------------------------------------------------------------------

PHELPS DODGE CORP.

Ticker:       PD             Security ID:  717265102
Meeting Date: MAR 14, 2007   Meeting Type: Special
Record Date:  FEB 12, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Approve Merger Agreement                  For       For        Management
2     Adjourn Meeting                           For       For        Management


--------------------------------------------------------------------------------

PRIDE INTERNATIONAL, INC.

Ticker:       PDE            Security ID:  74153Q102
Meeting Date: AUG 10, 2006   Meeting Type: Annual
Record Date:  JUN 22, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director David A. B. Brown          For       For        Management
1.2   Elect Director J.C. Burton                For       For        Management
1.3   Elect Director Archie W. Dunham           For       For        Management
1.4   Elect Director Francis S. Kalman          For       For        Management
1.5   Elect Director Ralph D. McBride           For       Withhold   Management
1.6   Elect Director Louis A. Raspino           For       For        Management
1.7   Elect Director David B. Robson            For       For        Management
2     Ratify Auditors                           For       For        Management


--------------------------------------------------------------------------------

QUICKSILVER RESOURCES INC.

Ticker:       KWK            Security ID:  74837R104
Meeting Date: MAY 23, 2007   Meeting Type: Annual
Record Date:  APR 12, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Anne Darden Self           For       For        Management
1.2   Elect Director Steven M. Morris           For       For        Management
2     Ratify Auditors                           For       For        Management


--------------------------------------------------------------------------------

ROWAN COMPANIES, INC.

Ticker:       RDC            Security ID:  779382100
Meeting Date: MAY 8, 2007    Meeting Type: Annual
Record Date:  MAR 9, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director William T. Fox, III        For       For        Management
1.2   Elect Director Sir Graham Hearne          For       For        Management
1.3   Elect Director Henry E. Lentz             For       For        Management
1.4   Elect Director P. Dexter Peacock          For       For        Management
2     Ratify Auditors                           For       For        Management


--------------------------------------------------------------------------------

SCHLUMBERGER LTD.

Ticker:       SLB            Security ID:  806857108
Meeting Date: APR 11, 2007   Meeting Type: Annual
Record Date:  FEB 21, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director P. Camus                   For       For        Management
1.2   Elect Director J.S. Gorelick              For       For        Management
1.3   Elect Director A. Gould                   For       For        Management
1.4   Elect Director T. Isaac                   For       For        Management
1.5   Elect Director N. Kudryavtsev             For       For        Management
1.6   Elect Director A. Lajous                  For       For        Management
1.7   Elect Director M.E. Marks                 For       For        Management
1.8   Elect Director D. Primat                  For       For        Management
1.9   Elect Director L.R. Reif                  For       For        Management
1.10  Elect Director T.I. Sandvold              For       For        Management
1.11  Elect Director N. Seydoux                 For       For        Management
1.12  Elect Director L.G. Stuntz                For       For        Management
1.13  Elect Director R. Talwar                  For       For        Management
2     ADOPTION AND APPROVAL OF FINANCIALS AND   For       For        Management
      DIVIDENDS.
3     APPROVAL OF INDEPENDENT REGISTERED PUBLIC For       For        Management
      ACCOUNTING FIRM.


--------------------------------------------------------------------------------

SMITH INTERNATIONAL, INC.

Ticker:       SII            Security ID:  832110100
Meeting Date: APR 24, 2007   Meeting Type: Annual
Record Date:  FEB 28, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director James R. Gibbs             For       For        Management
1.2   Elect Director John Yearwood              For       For        Management
2     Amend Omnibus Stock Plan                  For       For        Management
3     Ratify Auditors                           For       For        Management


--------------------------------------------------------------------------------

SMURFIT - STONE CONTAINER CORP.

Ticker:       SSCC           Security ID:  832727101
Meeting Date: MAY 9, 2007    Meeting Type: Annual
Record Date:  MAR 12, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director James R. Boris             For       For        Management
1.2   Elect Director Connie K. Duckworth        For       For        Management
1.3   Elect Director Alan E. Goldberg           For       Withhold   Management
1.4   Elect Director William T. Lynch, Jr.      For       For        Management
1.5   Elect Director Patrick J. Moore           For       For        Management
1.6   Elect Director James J. O'Connor          For       For        Management
1.7   Elect Director Jerry K. Pearlman          For       For        Management
1.8   Elect Director Thomas A. Reynolds, III    For       For        Management
1.9   Elect Director Eugene C. Sit              For       For        Management
1.10  Elect Director William D. Smithburg       For       For        Management
2     Ratify Auditors                           For       For        Management


--------------------------------------------------------------------------------

SUNOCO, INC.

Ticker:       SUN            Security ID:  86764P109
Meeting Date: MAY 3, 2007    Meeting Type: Annual
Record Date:  FEB 9, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director R. J. Darnall              For       For        Management
1.2   Elect Director J. G. Drosdick             For       For        Management
1.3   Elect Director U. O. Fairbairn            For       For        Management
1.4   Elect Director T. P. Gerrity              For       For        Management
1.5   Elect Director R. B. Greco                For       For        Management
1.6   Elect Director J. P. Jones, III           For       For        Management
1.7   Elect Director J. G. Kaiser               For       For        Management
1.8   Elect Director R. A. Pew                  For       For        Management
1.9   Elect Director G. J. Ratcliffe            For       For        Management
1.10  Elect Director J. W. Rowe                 For       For        Management
1.11  Elect Director J. K. Wulff                For       For        Management
2     Ratify Auditors                           For       For        Management


--------------------------------------------------------------------------------

SUPERIOR WELL SERVICES, INC.

Ticker:       SWSI           Security ID:  86837X105
Meeting Date: MAY 17, 2007   Meeting Type: Annual
Record Date:  APR 2, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director John A. Staley, Iv         For       For        Management
1.2   Elect Director David E. Snyder            For       For        Management
1.3   Elect Director Edward J. Dipaolo          For       For        Management
2     Ratify Auditors                           For       For        Management


--------------------------------------------------------------------------------

TESORO CORP.

Ticker:       TSO            Security ID:  881609101
Meeting Date: MAY 1, 2007    Meeting Type: Annual
Record Date:  MAR 13, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director John F. Bookout, III       For       For        Management
1.2   Elect Director Rodney F. Chase            For       For        Management
1.3   Elect Director Robert W. Goldman          For       For        Management
1.4   Elect Director Steven H. Grapstein        For       For        Management
1.5   Elect Director William J. Johnson         For       For        Management
1.6   Elect Director J.W. (jim) Nokes           For       For        Management
1.7   Elect Director Donald H. Schmude          For       For        Management
1.8   Elect Director Bruce A. Smith             For       For        Management
1.9   Elect Director Michael E. Wiley           For       For        Management
2     Ratify Auditors                           For       For        Management


--------------------------------------------------------------------------------

TRANSOCEAN INC.

Ticker:       RIG            Security ID:  G90078109
Meeting Date: MAY 10, 2007   Meeting Type: Annual
Record Date:  MAR 19, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     ELECTION OF DIRECTOR: ROBERT L. LONG      For       For        Management
2     ELECTION OF DIRECTOR: MARTIN B. MCNAMARA  For       For        Management
3     ELECTION OF DIRECTOR: ROBERT M. SPRAGUE   For       For        Management
4     ELECTION OF DIRECTOR: J. MICHAEL TALBERT  For       For        Management
5     APPROVAL OF THE APPOINTMENT OF ERNST &    For       For        Management
      YOUNG LLP TO SERVE AS OUR INDEPENDENT
      REGISTERED PUBLIC ACCOUNTING FIRM FOR
      2007.


--------------------------------------------------------------------------------

ULTRA PETROLEUM CORP.

Ticker:       UPL            Security ID:  903914109
Meeting Date: JUN 14, 2007   Meeting Type: Annual
Record Date:  MAY 7, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Michael D. Watford         For       For        Management
1.2   Elect Director W. Charles Helton          For       For        Management
1.3   Elect Director Stephen J. McDaniel        For       For        Management
1.4   Elect Director Robert E. Rigney           For       For        Management
1.5   Elect Director James C. Roe               For       For        Management
2     Ratify Ernst & Young LLP as Auditors      For       For        Management
3     Prepare a Climate Change Report           Against   Against    Shareholder


--------------------------------------------------------------------------------

UMICORE(FRMLY UNION MINIERE S.A.)

Ticker:                      Security ID:  B95505119
Meeting Date: OCT 24, 2006   Meeting Type: Special
Record Date:  OCT 18, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Receive Report of the Board of Directors  None      Did Not    Management
      on the Authorized Capital                           Vote
1.2   Approve Issuance of Equity or             For       Did Not    Management
      Equity-Linked Securities without                    Vote
      Preemptive Rights
2     Authorize Reissuance of Repurchased       For       Did Not    Management
      Shares                                              Vote
3.1   Receive Report of the Board of Directors  None      Did Not    Management
      on the Merger through Absorption of                 Vote
      Umicore Immo
3.2   Approve Merger by Absorption of Umicore   For       Did Not    Management
      Immo                                                Vote


--------------------------------------------------------------------------------

VALERO ENERGY CORP.

Ticker:       VLO            Security ID:  91913Y100
Meeting Date: APR 26, 2007   Meeting Type: Annual
Record Date:  MAR 1, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Ruben M. Escobedo          For       For        Management
1.2   Elect Director Bob Marbut                 For       For        Management
1.3   Elect Director Robert A. Profusek         For       For        Management
2     Ratify Auditors                           For       For        Management
3     Require a Majority Vote for the Election  Against   For        Shareholder
      of Directors
4     Advisory Vote to Ratify Named Executive   Against   For        Shareholder
      Officers' Compensation
5     Establish SERP Policy                     Against   Against    Shareholder


--------------------------------------------------------------------------------

WILLIAMS COMPANIES, INC., THE

Ticker:       WMB            Security ID:  969457100
Meeting Date: MAY 17, 2007   Meeting Type: Annual
Record Date:  MAR 26, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director Kathleen B. Cooper         For       For        Management
2     Elect Director William R. Granberry       For       For        Management
3     Elect Director Charles M. Lillis          For       For        Management
4     Elect Director William G. Lowrie          For       For        Management
5     Ratify Auditors                           For       For        Management
6     Approve Omnibus Stock Plan                For       For        Management
7     Approve Qualified Employee Stock Purchase For       For        Management
      Plan


--------------------------------------------------------------------------------

XSTRATA PLC

Ticker:                      Security ID:  G9826T102
Meeting Date: MAY 8, 2007    Meeting Type: Annual
Record Date:

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Accept Financial Statements and Statutory For       For        Management
      Reports
2     Approve Final Dividend of 30 US Cents Per For       For        Management
      Ordinary Share
3     Approve Remuneration Report               For       For        Management
4     Re-elect Mick Davis as Director           For       For        Management
5     Re-elect Trevor Reid as Director          For       For        Management
6     Re-elect Sir Steve Robson as Director     For       For        Management
7     Re-elect David Rough as Director          For       For        Management
8     Reappoint Ernst & Young LLP as Auditors   For       For        Management
      and Authorise the Board to Determine
      Their Remuneration
9     Authorise Issue of Equity or              For       For        Management
      Equity-Linked Securities with Pre-emptive
      Rights up to Aggregate Nominal Amount of
      USD 161,663,784.50
10    Authorise Issue of Equity or              For       For        Management
      Equity-Linked Securities without
      Pre-emptive Rights up to Aggregate
      Nominal Amount of USD 24,249,567.50
11    Authorise the Company to Use Electronic   For       For        Management
      Communications
12    Approve Cancellation of 13,609,948,397 of For       For        Management
      the Authorised But Unissued Ordinary
      Shares from Share Premium Account


--------------------------------------------------------------------------------

XTO ENERGY INC

Ticker:       XTO            Security ID:  98385X106
Meeting Date: MAY 15, 2007   Meeting Type: Annual
Record Date:  MAR 30, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director Lane G. Collins            For       For        Management
2     Elect Director Scott G. Sherman           For       For        Management
3     Elect Director Bob R. Simpson             For       For        Management
4     Ratify Auditors                           For       For        Management
========== END NPX REPORT


                                   SIGNATURES

     Pursuant to the requirements of the Investment Company Act of 1940, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.

(Registrant): Morgan Stanley Natural Resource Development Securities Inc.
              -----------------------------------------------------------

By (Signature and Title):


                                      /s/ Ronald E. Robison
                 ---------------------------------------------------------------
                 President and Principal Executive Officer - Office of the Funds

Date August 28, 2007


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