Officials have identified a worker who was killed Thursday when a rock ledge collapsed onto an excavator at a quarry in Sterling, Massachusetts. Brian Curtis Derby, 67, of Townsend, Massachusetts ...

The new excavator is part of a program to upgrade the equipment fleet of the mining complex of the enterprise. Over the past two months, the WK-35 quarry excavator with a bucket capacity of 25 cubic ...

The excavator is designed for heavy construction, demolition, material handling, deep sewer, water, large mass excavation and mining or quarry. The 842-hp PC900LC-11 was featured in Komatsu's ...