"Black-lung" disease State Supreme Court voids laws requiring minimum number of years of exposure to dusts to claim lung disability. Post F 8, 1976 p.34 Colorado Supreme Court declares unconstitutional provision denyiqg workmen's compensation to miners unless they have worked in state for 5 of last 10 years before being disabled. RMN F 3, 1976 p.5 Bureaucracy stifles black-lung victims' aid hope. Post Jy 3, 1977 p.1,2 Economic plight of state's black-lung victims. Post Jy 4, 1977 p,12 0
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