RT Journal Article SR Electronic T1 Update on lung disease in coal miners. JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 716 OP 718 DO 10.1136/oem.44.10.716 VO 44 IS 10 A1 W K Morgan YR 1987 UL http://oem.bmj.com/content/44/10/716.abstract AB