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Amgueddfa Cymru – Museum Wales
Translation of an article entitled 'Neuzeitliche Gesichtspunkte für das Auffahren von Gesteinsstrecken' which is supplement to a lecture given by Dipl.-Berging. Walter Müller at the General Meeting of the Association of German Metal Foundry and Mine Experts on September 12th 1953. Information Bulletin - N.C.B Translation No. A610/AB. 12 pages with appendices and table.
