Atlas Copco Mining and Rock Excavation Technique. “The self drilling anchor business has an excellent strategic fit with Minova’s Tunneling & Civil business and will get the right environment ...

With a screwdriver, insert the screw into the expansion anchor. Holding up to 40 pounds, self-drilling anchors, whether they ...

Union Depot made Carl Bolander & Sons the first contractor in the U.S. to bore large diameter, hollow core self-drilling anchors (SDA) to depths of 100 feet or more. The 1920s-era depot is being ...