American Materials Company, LLC
APAC, Inc. Harrison Construction
Ararat Rock Products Company
Carolina Sunrock LLC
Hanson Aggregates Southeast Inc.
Hinkle Contracting Company, LLC/ Buckhorn Materials, LLC
L. B. M. Industries Inc.
Luck Stone Corporation
Martin Marietta Materials
Material Sales Company
McCrary Stone Service Inc.
Mountain Materials Inc.
Nantahala Talc and Limestone Company Inc.
Shelter Creek Lime and Stone Quarry
Thompson Contractors Inc.
Vulcan Materials Company
Wake Stone Corporation
Yancey Stone Inc.