Youngquist Brothers Rock commissions a Liebheer R 9150B E excavator for use in limestone in Florida, U.S. (Photo: Liebherr)

Youngquist Brothers Rock commissioned a Liebherr R 9150B E hydraulic mining excavator in electric configuration, which is reportedly the first such unit operating in the U.S. The Fort Myers, Florida, limestone operation also runs a R994 E and a Bucyrus Erie 1260 walking dragline.