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2. Longitudinal study of lung function in coal-miners;Love, R.G.; Miller, B.G.;Thorax,1982
3. Longitudinal decline in FEV1 in United States coalminers;Attfield, MD;Thorax,1985
4. Loss of lung function associated with exposure to silica dust and with smoking and its relation to disability and mortality in South African gold miners;Hnizdo, E.;Br J Ind Med,1992
5. Longitudinal and cross sectional analyses of exposure to coal mine dust and pulmonary function in new miners;true;Br J Ind Med,1993