A survey of roof supports examined by SMRE during the period 1960-1967
By: by S. G. Harris.
Publisher: Safety in Mines Research Establishment
Published: 1969
Place of publication: [Sheffield, Eng.]
Language: eng
Number of pages: 51
Subjects: Mine timbering.; Mine inspection -- Great Britain.; Mineral industries -- Great Britain.
Notes: Bibliography: p. 51.