Art
J-GLOBAL ID:201602008445977380   Reference number:58A0068751

New Mining Trends at Pima’s Arisona Pit.

アリゾナ州Pima,鉱山における新しい露天掘の傾向(特にスキップ巻と物理探鉱について)
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Material:
Volume: 20  Issue:Page: 34-39  Publication year: 1958 
JST Material Number: D0093A  ISSN: 0015-4865  CODEN: MIWOA   Document type: Article
Country of issue: United States (USA) 
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