• Martin Specialty Coatings

• Matthias Landscaping Co.

• McLellan Blacksmithing

• McMillan Smith & Partners, PLLC

• McNICHOLS Company

• Metal Craftsman

• Metal Master

• Metalfab, Inc.

• Metro Mfg

• Miscellaneous Metals, Inc.

• Morse Industries

• Moultrie Manufacturing Company

• Mueller Ornamental Iron Works Inc.

• Napco, Inc.

• Nemato Composites Inc.

• Newell's Designs

• North Shore Supply Co. Steel Division

• Northern States Metals

• O'Connor Tanks Ltd.

• OP.X

• Offenhauser Co.

• Omega Industrial Products

• Optimum Steel Industries

• PAWLING CORPORATION

• Pacific Crest Industries

• Platnick Steel & Engineering