He first examined Briney on January 13, 1994, to evaluate him for pain in the lower back at the request of his family physician from Butte. Following his physical examination, and his review of Briney's MRI studies, he also diagnosed intervertebral disc herniations at L4-5 and L5-S1. He also responded in writing to an inquiry by Stauffer's insurer regarding the cause of Briney's current complaints, and expressed the opinion that they were predominately related to his initial injury in May 1981. It was his opinion, during his deposition, that the 1981 injury made Briney "significantly" more susceptible to additional injuries and diminished his ability to perform heavy labor on a long-term basis. He also agreed that Briney had sustained permanent physical impairment as a result of his 1981 injury.