Mid-Continental Restoration Co., Inc.

Miles Supply, Inc.

Natural Stone Institute

New Mexico Travertine, Inc.

Northwood Machine

O & G Industries

Park Industries

Petrillo Stone Corporation

Progressive Construction Services, Inc.

Reed Quarries Inc.

S.M. Haw Associates, Inc

Stone Belt Freight Lines

Stone Center of Indiana

Stone Center (Ohio)

Sturgis Materials

Texacon Cut Stone, LLC

TexaStone Quarries

The Tradesmen Group

Traditional Cut Stone Ltd.

Tri-State Cut Stone and Brick Company

Tri-State Stone & Building Supply

US Stone Industries

Vickery Stone Company

WF Meyers Company, Inc.

The Zenith Group, LLC