There is an ongoing safety risk when vehicles pass graders while they are working. The graders could encounter tough cutting and shift sideways, an unnoticed rock could roll off the blade into the path of a vehicle, or the grader operator could swerve to pick up scattered rocks and not notice a passing vehicle

A piece of steel shrapnel hit a worker in the upper thigh, narrowly missing the femoral artery, resulting in hospitalization and surgery to repair the damage and remove the shrapnel.    The worker was replacing a track link on an excavator and used a sledge hammer to hit the pin.  A shard chipped off the pin.  When hardened steel is struck with another steel tool there