Underground coal mine track inspection and cleaning vehicle

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049 ‡aBMRA
074 ‡a637-A (MF)
086 0 ‡aI 28.23:9246
100 1 ‡aUnger, Richard L.
245 1 0 ‡aUnderground coal mine track inspection and cleaning vehicle / ‡cby Richard L. Unger.
260 ‡aPgh [i.e. Pittsburgh] Pa. : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c1989.
300 ‡aii, 34 p. : ‡bill. ; ‡c28 cm.
336 ‡atext ‡btxt ‡2rdacontent
337 ‡acomputer ‡bc ‡2rdamedia
338 ‡aonline resource ‡bcr ‡2rdacarrier
490 0 ‡aReport of investigations / United States. Bureau of Mines ; ‡v9246
538 ‡aMode of access: Internet.
650 0 ‡aCoal mines and mining ‡xEquipment and supplies ‡xDesign and construction.
650 0 ‡aMine railroads ‡xTrack maintenance vehicles ‡xDesign and construction.
899 ‡a39015078477125
CID ‡a005950799
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DAT 1 ‡a20250112142342.0 ‡b2025-01-13T11:06:32Z
DAT 2 ‡a2024-12-24T18:30:02Z
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