EXHIBIT 21.01

SUBSIDIARIES OF MARTIN MARIETTA MATERIALS, INC.

AS OF JANUARY 31, 2015

Name of Subsidiary	Percent Owned
Alamo Gulf Coast Railroad Company, a Texas corporation		99.5	%1
Alamo North Texas Railroad Company, a Texas corporation		99.5	%2
American Aggregates Corporation, a North Carolina corporation		100	%
American Materials Technologies, LLC, a Tennessee limited liability company		100	%3
American Stone Company, a North Carolina corporation		50	%4
Bahama Rock Limited, a Bahamas corporation		100	%
Brookhollow of Alexandria, Inc., a Louisiana corporation		100	%5
Brookhollow Corporation, a Delaware corporation		100	%6
Brook Hollow Properties, Inc., a Texas corporation		100	%7
Brookhollow of Virginia, a Virginia corporation		100	%8
California Natural Aggregates, Inc., a California corporation		100	%9
Campbell’s C-Ment Contracting, Inc., a Colorado corporation		100	%10
Creole Corporation, a Delaware corporation		100	%11

¹  Alamo Gulf Coast Railroad Company is owned by Martin Marietta Materials Southwest, Inc., (99.5%) and certain individuals (0.5%).

²  Alamo North Texas Railroad Company is owned by Martin Marietta Materials Southwest, Inc., (99.5%) and certain individuals (0.5%).

³  American Materials Technologies, LLC is a wholly owned subsidiary of Meridian Aggregates Company, a Limited Partnership.

⁴  Martin Marietta Materials, Inc., owns a 50% interest in American Stone Company.

⁵  Brookhollow of Alexandria, Inc., is a wholly owned subsidiary of Brookhollow Corporation.

⁶  Brookhollow Corporation is a wholly owned subsidiary of Texas Industries, Inc.

⁷  Brook Hollow Properties, Inc., is a wholly owned subsidiary of Brookhollow Corporation.

⁸  Brookhollow of Virginia is a wholly owned subsidiary of Brookhollow Corporation.

⁹  California Natural Aggregates, Inc., is a wholly owned subsidiary of Texas Industries, Inc.

¹⁰  Campbell’s C-Ment Contracting, Inc., is a wholly-owned subsidiary of Suburban Acquisition Company.

¹¹  Creole Corporation is a wholly owned subsidiary of Texas Industries, Inc.

FRI Ready Mix of Tennessee, LLC, a Florida limited liability company	100	%12
Granite Canyon Quarry, a Wyoming joint venture	100	%
Harding Street Corporation, a North Carolina corporation	100	%
HSMM LLC, a North Carolina limited liability company	100	%
Martin Marietta Composites, Inc., a Delaware corporation	100	%
Martin Marietta Funding LLC, a Delaware limited liability company	100	%
Martin Marietta Inc., a North Carolina corporation	100	%
Martin Marietta Kansas City, LLC, a Delaware limited liability company	100	%13
Martin Marietta Magnesia Specialties, LLC, a Delaware limited liability company	100	%
Martin Marietta Materials Canada Limited, a Nova Scotia, Canada corporation	100	%
Martin Marietta Materials of Missouri, Inc., a Delaware corporation	100	%
Martin Marietta Materials Real Estate Investments, Inc., a North Carolina corporation	100	%
Martin Marietta Materials Southwest, Inc., a Texas corporation	100	%
Material Producers, Inc., an Oklahoma corporation	100	%14
Meridian Aggregates Company, a Limited Partnership, a North Carolina limited partnership	100	%15
Meridian Aggregates Company Northwest, LLC, a North Carolina limited liability company	100	%16
Meridian Aggregates Company Southwest, LLC, a North Carolina limited liability company	100	%17

¹²  FRI Ready Mix of Tennessee, LLC, is a wholly owned subsidiary of American Materials Technologies, LLC.

¹³  Martin Marietta Kansas City, LLC, is owned 95% by Martin Marietta Materials, Inc. and 5% by Martin Marietta Materials of Missouri, Inc.

¹⁴  Material Producers, Inc., is a wholly owned subsidiary of Martin Marietta Materials Southwest, Inc.

¹⁵  Meridian Aggregates Company, a Limited Partnership, is owned 98% by Meridian Aggregates Investments, LLC. The remaining 2% is owned by Martin Marietta Materials, Inc.

¹⁶  Martin Marietta Materials, Inc. is the sole member of Meridian Aggregates Company Northwest, LLC.

¹⁷  Martin Marietta Materials Southwest, Inc. is the sole member of Meridian Aggregates Company Southwest, LLC.

Meridian Aggregates Investments, LLC, a North Carolina limited liability company	100	%18
Meridian Granite Company, a North Carolina corporation	100	%19
Mid South-Weaver Joint Venture, a North Carolina joint venture	50	%20
Mid-State Construction & Materials, Inc., an Arkansas corporation	100	%
MTD Pipeline LLC, a Delaware limited liability company	50	%21
Partin Limestone Products, Inc., a California corporation	100	%22
Powderly Transportation, Inc., a North Carolina corporation	100	%23
R&S Sand & Gravel, LLC, a North Carolina limited liability company	100	%24
Riverside Cement Company, a California partnership	100	%25
Riverside Cement Holdings Company, a Delaware corporation	100	%26
Rocky Mountain Ready Mix Concrete, Inc., a Colorado corporation	100	%27
Southwestern Financial Corporation, a Texas Corporation	100	%28
Suburban Acquisition Company, a Colorado corporation	100	%
Texas Industries Holdings, LLC, a Delaware limited liability company	100	%29
Texas Industries, Inc., a Delaware corporation	100	%
Texas Industries Trust, a Delaware trust	100	%30

¹⁸  Meridian Aggregates Investments, LLC, is owned 99% by Martin Marietta Materials, Inc. and 1% by Martin Marietta Materials Real Estate Investments, Inc.

¹⁹  Meridian Granite Company is a wholly owned subsidiary of Meridian Aggregates Company, a Limited Partnership.

²⁰  Mid South-Weaver Joint Venture is owned 50% by Martin Marietta Materials, Inc.

²¹  Martin Marietta Magnesia Specialties, LLC, a wholly owned subsidiary of Martin Marietta Materials, Inc., owns a 50% interest in MTD Pipeline LLC.

²²  Partin Limestone Products, Inc., is a wholly owned subsidiary of Riverside Cement Company.

²³  Powderly Transportation, Inc., is a wholly owned subsidiary of Meridian Aggregates Company, a Limited Partnership.

²⁴  Martin Marietta Materials, Inc. is the manager of and owns a 90% interest in R&S Sand & Gravel, LLC. The other 10% is owned by Harding Street Corporation, a wholly owned subsidiary of Martin Marietta Materials, Inc.

²⁵  Riverside Cement Company is owned 49% by TXI California, Inc. and 51% by TXI Riverside Inc.

²⁶  Riverside Cement Holdings Company is a wholly owned subsidiary of Riverside Cement Company.

²⁷  Rocky Mountain Ready Mix Concrete, Inc. is a wholly owned subsidiary of Campbell’s C-Ment Contracting, Inc.

²⁸  Southwestern Financial Corporation is a wholly owned subsidiary of TXI Operations, LP.

²⁹  Texas Industries Holdings, LLC is a wholly owned subsidiary of Texas Industries, Inc.

³⁰  Texas Industries Trust is owned 100% by Texas Industries Holdings, LLC.

Theodore Holding, LLC, a Delaware limited liability company	60.7	%31
TXI Aviation, Inc. dba TXI Supply, a Texas corporation	100	%32
TXI California Inc., a Delaware corporation	100	%33
TXI Cement Company, a Delaware corporation	100	%34
TXI LLC, a Delaware limited liability company	100	%35
TXI Operating Trust, a Delaware trust	100	%36
TXI Operations, LP, a Delaware limited partnership	100	%37
TXI Power Company, a Texas corporation	100	%38
TXI Riverside Inc., a Delaware corporation	100	%39
TXI Transportation Company, a Texas corporation	100	%40

³¹  Martin Marietta Materials, Inc., is the manager of and owns a 60.7% interest in Theodore Holdings, LLC.

³²  TXI Aviation, Inc., is a wholly owned subsidiary of Texas Industries, Inc.

³³  TXI California Inc., is a wholly owned subsidiary of Texas Industries, Inc.

³⁴  TXI Cement Company is a wholly owned subsidiary of Texas Industries, Inc.

³⁵  TXI, LLC is a wholly owned subsidiary of Texas Industries, Inc.

³⁶  TXI Operating Trust is owned 100% by TXI LLC.

³⁷  TXI Operations, LP is owned 99% by Texas Industries Trust and owned 1% by TXI Operating Trust.

³⁸  TXI Power Company is a wholly owned subsidiary of Texas Industries, Inc.

³⁹  TXI Riverside Inc. is a wholly owned subsidiary of Texas Industries, Inc.

⁴⁰  TXI Transportation Company is a wholly owned subsidiary of Texas Industries, Inc.