USA

Alabama

Big River Industries, Inc.

Big River Industries, Inc.(4)

Carolina Stalite Company

Alaska

TXI-Texas Industries, Inc.(4)

Utelite Corporation

TXI-Texas Industries, Inc.(5)

Arizona

TXI-Texas Industries, Inc.(3)

Utelite Corporation

Arkansas

Big River Industries, Inc.(2)

Big River Industries, Inc.

Buildex Sales Office

TXI-Texas Industries, Inc.

California

TXI-Texas Industries, Inc.(5)

Utelite Corporation

TXI-Texas Industries, Inc.(4)

TXI-Texas Industries, Inc.(3)

Canada-British Columbia

TXI-Texas Industries, Inc.(3)

Canada-New Brunswick

Norlite Corporation

Carolina Stalite Company

Canada-Nova Scotia

Norlite Corporation

Canada-Ontario

DiGeronimo Aggregates LLC(2)

Norlite Corporation

Canada-Quebec

Norlite Corporation

Colorado

TXI-Texas Industries, Inc.(3)

Buildex Sales Office

Utelite Corporation

Connecticut

Norlite Corporation

Delaware

Solite, LLC

Carolina Stalite Company

Norlite Corporation

Florida

Big River Industries, Inc.

Carolina Stalite Company

TXI-Texas Industries, Inc.

Georgia

Big River Industries, Inc.

Carolina Stalite Company

Hawaii

TXI-Texas Industries, Inc.(5)

TXI-Texas Industries, Inc.(4)

Utelite Corporation

Idaho

Utelite Corporation

TXI-Texas Industries, Inc.(3)

Illinois

Hydraulic Press Brick Co.

Big River Industries, Inc.(2)

Big River Industries, Inc.

Buildex Sales Office

DiGeronimo Aggregates LLC(2)

Carolina Stalite Company

TXI-Texas Industries, Inc.

Indiana

Hydraulic Press Brick Co.

Hydraulic Press Brick Co.(2)

DiGeronimo Aggregates LLC(2)

Big River Industries, Inc.(2)

Big River Industries, Inc.

Iowa

Buildex Sales Office

Big River Industries, Inc.(2)

Big River Industries, Inc.

TXI-Texas Industries, Inc.(3)

Kansas

Buildex Marquette Plant

Buildex Sales Office

TXI-Texas Industries, Inc.(3)

Kentucky

Big River Industries, Inc.(2)

Hydraulic Press Brick Co.

Carolina Stalite Company

Big River Industries, Inc.

DiGeronimo Aggregates LLC(2)

Louisiana

Big River Industries, Inc.

Big River Industries, Inc.(3)

TXI-Texas Industries, Inc.

Carolina Stalite Company

Maine

Norlite Corporation

Maryland

Solite, LLC

Carolina Stalite Company

Norlite Corporation

Big River Industries, Inc.

Massachusetts

Norlite Corporation

Michigan

DiGeronimo Aggregates LLC(2)

Hydraulic Press Brick Co.

Big River Industries, Inc.

TXI-Texas Industries, Inc.

Minnesota

Big River Industries, Inc.(2)

Big River Industries, Inc.

Buildex Sales Office

TXI-Texas Industries, Inc.(3)

Mississippi

Big River Industries, Inc.

Big River Industries, Inc.(2)

Missouri

Buildex New Market Plant

Buildex Sales Office

Big River Industries, Inc.(2)

Big River Industries, Inc.

TXI-Texas Industries, Inc.

Montana

Utelite Corporation

TXI-Texas Industries, Inc.(3)

Nebraska

Buildex Sales Office

TXI-Texas Industries, Inc.(3)

Nevada

Utelite Corporation

TXI-Texas Industries, Inc.(3)

TXI-Texas Industries, Inc.(5)

TXI-Texas Industries, Inc.(4)

New Hampshire

Norlite Corporation

New Jersey

Norlite Corporation

Solite, LLC

Big River Industries, Inc.

New Mexico

TXI-Texas Industries, Inc.(3)

Buildex Sales Office

TXI-Texas Industries, Inc.

Utelite Corporation

New York

Norlite Corporation

DiGeronimo Aggregates LLC(2)

Big River Industries, Inc.

Hydraulic Press Brick Co.

North Carolina

Carolina Stalite Company

Carolina Stalite Company(2)

Carolina Stalite Company(3)

Big River Industries, Inc.

North Dakota

Buildex Sales Office

TXI-Texas Industries, Inc.(3)

Ohio

DiGeronimo Aggregates LLC

DiGeronimo Aggregates LLC(2)

Hydraulic Press Brick Co.

Big River Industries, Inc.

Carolina Stalite Company

Norlite Corporation

Oklahoma

Chandler Materials Company

Buildex Sales Office

TXI-Texas Industries, Inc.

Oregon

TXI-Texas Industries, Inc.(3)

Utelite Corporation

TXI-Texas Industries, Inc.(5)

TXI-Texas Industries, Inc.(4)

Pennsylvania

DiGeronimo Aggregates LLC(2)

Norlite Corporation

Carolina Stalite Company

Big River Industries, Inc.

Hydraulic Press Brick Co.

Rhode Island

Norlite Corporation

South Carolina

Carolina Stalite Company

Big River Industries, Inc.

South Dakota

Buildex Sales Office

TXI-Texas Industries, Inc.(3)

Tennessee

Big River Industries, Inc.(2)

Carolina Stalite Company

Big River Industries, Inc.

DiGeronimo Aggregates LLC(2)

Hydraulic Press Brick Co.

Texas

TXI-Texas Industries, Inc.

TXI-Texas Industries, Inc.(2)

Big River Industries, Inc.

Buildex Sales Office

Utah

Utelite Corporation

TXI-Texas Industries, Inc.(3)

Vermont

Norlite Corporation

Virginia

Solite, LLC

Solite, LLC(2)

Carolina Stalite Company

Big River Industries, Inc.

Washington

Utelite Corporation

TXI-Texas Industries, Inc.(4)

TXI-Texas Industries, Inc.(3)

TXI-Texas Industries, Inc.(5)

West Virginia

Carolina Stalite Company

Big River Industries, Inc.

DiGeronimo Aggregates LLC(2)

Hydraulic Press Brick Co.

Solite, LLC

Wisconsin

Big River Industries, Inc.(2)

Big River Industries, Inc.

Buildex Sales Office

Hydraulic Press Brick Co.

DiGeronimo Aggregates LLC(2)

TXI-Texas Industries, Inc.

Wyoming

TXI-Texas Industries, Inc.(3)

Utelite Corporation

Buildex Sales Office

Japan

Taiheiyo Cement Corporation