EE was picking up metal plate from the ground to throw in the back of a pick-up. EE estimated metal plate weighed about 150-200lbs. EE rested a bit before calling EE's father to take EE to the ER. The ER stated right erector muscle strain and to take ibuprofen follow up with Occupational Health on 4/5/2016. Cleared to return to work on 4/6/2016 with no restrictions.