• McMillan Smith & Partners, PLLC

• Metalfab, Inc.

• Metro Fence Company, Inc.

• Metro Mfg

• Michigan Ladder Co.

• Miller Electric Construction Inc.

• Mine Safety Appliances Co.

• Mueller Ornamental Iron Works Inc.

• Nemato Composites Inc.

• North Shore Supply Co. Steel Division

• O'Connor Mfg. Co., Inc.

• O'Connor Tanks Ltd.

• P.W. Platforms, Inc.

• PA Insert Corp.

• Permafloors, Inc.

• Precast Systems, LLC

• Precision Ladders, LLC

• Precision Welding & Fabrication

• Press-Seal Gasket Corporation

• Pro-Ladder Supply

• Putnam Rolling Ladder Co., Inc.

• Quality Metalcrafts, Inc.

• RB Industries, Inc.

• Repcor

• Richard Goettle, Inc.

• Rigidized Metals Corp.