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Descripción archivística
Con objetos digitales James Charles Napoleon Humphreys, Mining papers
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Underground workings
Underground workings
Underground workings
Underground workings
Underground workings of Main Reef and Main Reef Leader
Underground workings of Main Reef and Main Reef Leader
Underground workings of Upper Leaders
Underground workings of Upper Leaders
Underground workings of Main Reef and Main Reef Leader
Underground workings of Main Reef and Main Reef Leader
Underground workings of Upper Leader
Underground workings of Upper Leader
Underground workings of Upper Leaders
Underground workings of Upper Leaders
Underground workings
Underground workings
Underground workings
Underground workings
Underground workings
Underground workings
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