Since 1968. Materials Testing Consultants (MTC) offers cost-effective solutions in geotechnical engineering, construction materials testing, and environmental consulting. Our independent materials testing lab provides testing in soils, concrete, aggregates, asphalt and steel. We regularly team with municipalities, state agencies, architects, developers and private clients by applying our skills and knowledge of the engineering challenges and solutions. With our corporate office in Grand Rapids, Michigan and portable offices in satellite locations our services cover the entire Great Lakes Region. To view our current job openings, please visit our careers page.