Mechanical engineering staff and electrical engineering staff at mines of coal, stratified ironstone, shale or fireclay /
Great Britain.Ministry of Power.
London : H.M.S.O.,
1966.
At head of title: Ministry of Power Mines and Quarries Act 1954.
Bound with other "books prepared and designated by the Minister for the purposes of Section 137."
Great Britain.
Mining law
Shale.
Mine safety
Coal mines and mining
Coal mines and mining