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Booklet 'N.C.B. East Wales Area, Safety and Standards Investigation, East Wales Area for National 50 Pit Safety Promotion Campaign 1968-69 (9 months) under the direction of D.T.Simon, East Wales Area Safety Engineer. Merthyr Vale Colliery - Final Report. Examination carried out June 1969. Physical Investigation'.
Pages held together with plastic spine. Pink cover with black print.
