Over-exertion in lifting objects
Miner says EE was just cleaning up around the guillotine slab and when EE picked up a rock EE felt a ""twinge"" in EE's lower back. By the time EE drove home EE was in pain and went to hospital. EE didn't report to anyone until the next morning. EE had x-rays and was given a prescription for ibuprofen and a 7 day excused from work note.