Our commitment to northwestern Wisconsin and northeastern Minnesota goes beyond the bottom line. The people of Johnson Materials Co live, work, and play in this region. All products are quarried, processed, and transported in ways that minimize environmental impact, with respect and sensitivity to the area's natural resources and uncompromising beauty. Excavating and processing of industrial sand and aggregate products is a highly regulated industry. Johnson Materials Co is a member of the Wisconsin Aggregate Producers Association and adheres to its mission and guiding principles. Equipment operators and quarry personnel are Mine Safety and Health Administration ( MSHA ) -trained and follow guidelines established by the Wisconsin Department of Natural Resources, the United States Environmental Protection Agency, and other regulatory bodies.