American Commercial Incorporated offers a complete selection of ground control solutions. We are a leading designer and manufacturer of underground steel supports. Our experience in the art of tunneling spans over seventy-five years and thousands of projects, great and small, on six continents. Our underground supports are designed specifically for the requirements of each permanent or temporary project. Geological conditions dictate the type of support needed to control ground after excavation, therefore supports are designed in an endless variety of configurations to control every condition known. We also supply yielding sets, Tri-Log TM wood cribbing, portal canopies, RBS jack posts, overcasts, concrete donuts, Paurat roadheaders, and raiseboring machines.