Colorado mining laws with safety and health rules and regulations

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110 1 0 ‡aColorado.
245 1 0 ‡aColorado mining laws with safety and health rules and regulations.
260 0 ‡aDenver, ‡bColorado Bureau of Mines, ‡c1971.
300 ‡av, 138 p. ‡bmap. ‡c24 cm.
410 1 0 ‡aC̲o̲lorado. ‡bB̲ureau of Mines. ‡tBulletin ; ‡v20
538 ‡aMode of access: Internet.
650 0 ‡aMine safety ‡xLaw and legislation ‡zColorado
650 0 ‡aMining law ‡zColorado.
710 1 0 ‡aColorado. ‡bBureau of Mines.
CID ‡a101720230
DAT 0 ‡a20020415161409.0 ‡b20160831000000.0
DAT 1 ‡a20180312230448.0 ‡b2024-10-10T18:11:37Z
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