The Occupational Safety and Health Administration has been called to the scene of a incident involving an excavator at a Walpole, Massachusetts construction site.

An autonomous excavator developed by researchers at the Federal Institute of Technology (ETH) in Zurich, Switzerland, has successfully constructed 19.6 ft. tall and 130 ft. long wall.

WALPOLE, Mass. — The Occupational Safety and Health Administration has been called to the scene of a incident involving an excavator at a Walpole, Massachusetts construction site.