National COSH selected SpaceX and The Boring Co., both owned by Musk, for one slot, citing workers who suffered crushed limbs, amputations, chemical burns and a preventable death. In addition, Black Iron Reinforcing, owned by XL Concrete, earned a spot for a worker death from electrocution, a partial finger amputation, 29 OSHA violations in a decade and allegedly denying election results after workers voted to join a union.