Incombustible Required on Floor and on Rib-Roof Surfaces of Coal Mines to Prevent Propagation of Explosions.
Contributors: Hartmann, I.; Nagy, J.; Christofel, F.
Series: Report of investigations (United States. Bureau of Mines) -- 5053
Publisher: s.n
Published: 1954
Place of publication: S.l
Language: eng
Notes: 1