Reports of H.M. Inspectors of Mines and Quarries under the Mines and Quarries Act, 1954.
Great Britain.Mines and Quarries Inspectorate.
Great Britain.Ministry of Power.
London : H.M. Stationery Off.,
Issued by: Ministry of Power, .
Great Britain. Mines and Quarries Inspectorate.
Mine inspection
Reports of H.M. Inspectors of Mines and Quarries under the Mines and Quarries Act, 1954. Northumberland district