Example to paragraph (a): B is a 58-year-old miner's helper with a fourth grade education who has a lifelong history of unskilled arduous physical labor. B says that he is disabled because of arthritis of the spine, hips, and knees, and other impairments. Medical evidence shows a "severe" combination of impairments that prevents B from performing his past relevant work. Under these circumstances, we will find that B is disabled.
20 C.F.R. §404.1562