Brakefield Equipment, Inc. (Brakefield #1)

Kemp Stone Co., Inc. (Hulbert Quarry)

APAC-Central, Inc. (Spiro Quarry)

Lattimore Materials (Stringtown)

River Valley Materials, LLC (Braden Sand Pit)

U.S. Lime Company – St. Clair

Donaho Stone, LLC (Wilburton #1)

Dolese Bros. Co. (Big Canyon)

Withers Shale, Inc.

HSG Acquisition Company, LLC (Coweta Plant #10)

Dane Ford (2 Rivers)

Harris Construction Services (Harris #2)

King Trucking Company (Mine #1)

Dolese Bros. Co. (Cooperton)

Dolese Bros. Co. (Dover)

Harrison Gypsum, LLC (ACG Materials - Bouse Junction #1)