8/9/2013 employee was walking from shop when he felt a sting in his right forearm and noticed a small cut.It's believed a small piece of metal from the track of excavator 60' away popped off and hit his arm. After a few days of discomfort he went to the dr. on 8/23/2013.A surgeon removed a tiny piece of metal on 8/30/2013 at which time the injury became reportable.