The decision was made to build underground, but how to support the brick building, constructed in 1938, while excavating an additional three stories below ground presented a problem. Traditional methods, such as installing enormous staggered pillars to support the existing structure were considered. But there was a faster, less expensive, and safer way to do the job ? the Atlas Copco MAI Self-Drilling Anchor (SDA) system.
Epiroc operated under the trademark “Atlas Copco” prior to January 1, 2018.