US Goverment printing office, Washington, 1952. - p. 168.
This bulleten is the edition of one of a series of publications issued as a result of cooperation between the Safety in Mines Research Board of Great Britain and the Bureau of Mines, United States Departament of the Interior. Under this cooperative arrangement, begun in 1924, the exchange of personnel and data permitted intensive investigation of specific problems dealing with the prevention or abatement of accidents in mines. The determination of constants such as the limits of flammability and explosibility of gasts and dusts encountered in mines and the mineral industries was part of the cooperative program.
