A federal investigation blamed a Nevada gold mine in the death of a 57-year-old driller who was struck by a flatbed truck.

Steven L. Halverson was fatally injured last June at the open-pit Genesis Mine in Carlin, Nev.

In a report issued late Tuesday, the Mine Safety and Health Administration said Newmont USA Ltd. failed to designate safety lanes for trucks working inside the pit.

Managers adopted new procedures to correct that violation.

MSHA also said the truck's backup alarm couldn't be heard above the noise of the drilling.

The company swapped backup alarms.

Another worker tried to warn Halverson the truck was backing up, but the warning came too late. Investigators say the truck was traveling at less than 3 mph.