Exclusive: After citations against Elon Musk’s Boring Company were suddenly withdrawn, federal regulators are now investigating Nevada OSHA

The U.S. federal workplace safety regulator has opened an investigation into Nevada’s state OSHA agency weeks after Fortune reported that three citations the state agency had issued against Elon Musk’s Boring Company were suddenly withdrawn, according to three people familiar with the matter.

Nevada OSHA confirmed that the U.S. Occupational Safety and Health Administration had received a complaint about the state agency and had opened a federal review into whether Nevada OSHA was at...