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Amgueddfa Cymru – Museum Wales
Carbon copy on white lined paper of a 3 page handwritten letter from Mr G. Morgan the Manager Blaenavon Mine to Mr G. Robinson Production Manager and copied to Mr W.B. Cleaver Deputy Director Mining. Dated 20 July 1970. "Subject: Appraisal of Blaenavon Mine by H.M. Inspectors with regard to the Mines future use after cissation of coal production".
