00702nam a22002171 4500 sa 68013596 DLC 20260227112623.0 741021s1968 ii a b 00000 eng sa 68013596 PL480:I-E-10490 TN301 .I56 622/.42 India (Republic) Technical Committee on Mining Standards. Report in respect of ventilation standards. [Delhi] Office of Chief Inspector of Mines, Ministry of Labour and Employment, Govt. of India, 1963 [i.e. 1968] iii, 63 p. illus. 25 cm. 2.10 ($0.76) Bibliography: p. 10-11. Mine ventilation. 85201 85201