413 resultados para Copper mines and mining
Resumo:
"This bulletin contains all laws, rules and regulations of the Department of Conservation in relation to minerals from the year 1930 to 1934 inclusive. Laws, rules and regulations prior to 1930 are contained in the edition of 1930."
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Mode of access: Internet.
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Unbound leaves.
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"Dédiés a l'Académie royale des sciences de Paris, et publiés par M. G. Jars ...
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Some numbers also in revised editions.
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Description based on: 1916.
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"No. 44."
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Mode of access: Internet.
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"Serial no. 97-45."
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No. 67, 72, 77 issued as Directory of mining enterprises.
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Report for 1926-1928 not issued.
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Mode of access: Internet.
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Mode of access: Internet.
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Includes bibliographical references (p. 40-41)
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"Illinois lands unsuitable for mining program."