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Record Nr. |
UNINA9910696459203321 |
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Titolo |
Design practices for multiple-seam room-and-pillar mines [[electronic resource]] |
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Pubbl/distr/stampa |
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Washington, DC : , : Bureau of Mines, U.S. Dept. of the Interior, , [1994] |
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Descrizione fisica |
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2 unnumbered pages : digital, PDF file |
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Collana |
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Technology news ; ; no. 443 |
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Soggetti |
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Coal mines and mining - United States |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Title from title screen (viewed on Mar. 6, 2008). |
"November 1994." |
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