Bronze Age Gold from Wales
Modern Gateroad Supports in Germany (booklet)
Abstract of an article entitled 'Grundzüge und Ziele der Entwicklung des neuzeitlichen Abbaustreckenausbaus, erläutert an Beispielen aus dem Grubenbetrieb' by Bergwerksdirekter Bergassessor a.D. Hans Ulrich Ritter, which appeared in Glückauf, 88 (1952), Vol. 25/26, pp. 603/625. Information Bulletin. 26 pages and a bibliography.
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