Mining & Quarrying - Michigan, US (United States)

Pro-Tec Equipment in Charlotte, MI, US (United States) - Leading manufacturer and distributor of Trench Shielding & Shoring equipment since 1995

Griswold Machine & Engineering in Union City, MI, US (United States) - Lightweight trench shields & trench shoring for municipalities & contractors

Mid-States Bolt & Screw Co in Burton, MI, US (United States) - Mid-States Bolt & Screw’s endless selection of industrial fasteners and hardware ensures that we provide the perfect solution for any construction and industrial application.

Griswold Machine & Engineering, Inc. in Union City, MI, US (United States) - Lightweight trench shields & trench shoring for municipalities & contractors

Detroit Salt Co in Detroit, MI, US (United States) - This site contains information about the Detroit Salt Company Mine, mining operations, and products of the company. The salt mine is located in Detroit, Michigan.

Rjmarshall in Southfield, MI, US (United States) - supplier of particulate raw materials

Efficiency Production, Inc. in Mason, MI, US (United States) - Cost-effective, safe, & versatile trench shielding & shoring systems for the worldwide underground construction industry through innovative engineering, state-of-the-art manufacturing processes