EE was lifting a hydraulic rock splitter from a rock when EE felt EE's right shoulder give out. EE was asked if EE wanted to do another job, EE said ""no"" EE was alright. Monday 6/19/17 EE said EE's back felt like it was going out, at that time went to a less strenuous job. EE's on restricted duty not lifting more than 10lb, PT for 4 weeks and then re-evaluation.