Schedule 13G-A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 1)*

McMoRan Exploration Co.

(Name of Issuer)

Common Stock, $0.01 par value

(Title of Class of Securities)

582411104

(CUSIP Number)

December 31, 2006

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

[ ] Rule 13d-1(b)

[ ] Rule 13d-1(c)

[x] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Persons who respond to the collection of information contained in this form are not

required to respond unless the form displays a currently valid OMB control number.

CUSIP No. 582411104

Name of Reporting Person

Richard C. Adkerson

I.R.S. Identification No. of Above Person (entities only)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)....................................................................................................................._______

(b)....................................................................................................................._______

3) SEC Use Only

Citizenship or Place of Organization

United States of America

Number of (5) Sole Voting Power 1,635,427 shares*

Shares __________________________________________________

Beneficially (6) Shared Voting Power 33,908 shares

Owned by ___________________________________________________

Each Reporting (7) Sole Dispositive Power 1,635,427 shares*

Person ___________________________________________________

With: (8) Shared Dispositive Power 33,908 shares

Aggregate Amount Beneficially Owned by Each

Reporting Person 1,669,335 shares*

10)

Check if the Aggregate Amount in Row (9)

Excludes Certain Shares (See Instructions) _____

11)

Percent of Class Represented by Amount

in Row (9) 5.6%**

12) Type of Reporting Person (See Instructions) IN

___________________

* Amount beneficially owned includes 1,507,065 shares the Reporting Person has the right to acquire within 60 days of December 31, 2006, upon the exercise of stock options, and preferred stock convertible into 41,579 shares of Common Stock beneficially owned by the Reporting Person.

**	Based on 28,306,730 total shares outstanding as of December 31, 2006.

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Item 1(a)	Name of Issuer:

	McMoRan Exploration Inc.

Item 1(b)	Address of Issuer’s Principal Executive Offices:

	1615 Poydras Street
	New Orleans, Louisiana 70112

Item 2(a)	Name of Person Filing:

	Richard C. Adkerson

Item 2(b)	Address of Principal Business Office:

	1615 Poydras Street
	New Orleans, Louisiana 70112

Item 2(c)	Citizenship:

	United States

Item 2(d)	Title of Class of Securities:

	Common Stock, $0.01 par value

Item 2(e)	CUSIP Number:

	582411104

Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

[ ]

Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o);

(b)

[ ]

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

[ ]

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)

[ ]

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)

[ ]

An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)

[ ]

An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)

[ ]

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

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(h)

[ ]

A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

[ ]

A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

[ ]

Group, in accordance with § 240.13d-1(b)(1)(ii)(J).

Item 4. Ownership.

(a) Amount Beneficially Owned 1,669,335 shares

(b) Percent of Class 5.6%

(i) Sole power to vote or to

direct the vote 1,635,427 shares

(ii) Shared power to vote or to

direct the vote 33,908 shares

(iii) Sole power to dispose or to direct

the disposition of 1,635,427 shares

(iv) Shared power to dispose or to

direct the disposition of 33,908 shares

Item 5.

Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following [ ] .

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

Not Applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

Not applicable.

Item 8.

Identification and Classification of Members of the Group.

Not applicable.

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Item 9. Notice of Dissolution of Group.

Not applicable.

Item 10. Certification.

Not applicable.

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SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct as of December 31, 2006.

Date: February 1, 2007 By: /s/ Richard C. Adkerson

Richard C. Adkerson

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