Stronger safety measures may have saved the lives of two workers who died at a Pearl Harbor naval maintenance facility in December 2014 after being struck by a 7-ton buoy, which has led OSHA to order safety upgrades.

Workers at the Naval Inactive Ships Maintenance Office were repairing moorings on a barge when a chain suspending the buoy broke and struck the men. Two other workers suffered injuries during the incident at the Middle Loch facility. The work was subcontracted to Healy Tibbitts Builders Inc. by Truston Technologies Inc. for the Navy.