LEADER 01404nam  2200373I  450 
001 9910707097003321
005 20180627140535.0
035   $a(CKB)5470000002460513
035   $a(OCoLC)1034692875
035   $a(EXLCZ)995470000002460513
100   $a20180507d1950      ua             0
101 0 $aeng
135   $aur|||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aSome innovations in equipment for scaling high roofs and mine walls /$fBrinton C. Brown, Fred D. Wright, and Homer J. Ballinger
210  1$a[Washington, D.C.] :$cUnited States Department of the Interior, Bureau of Mines,$d1950.
215   $a1 online resource (11 pages) $cillustrations
225 1 $aReport of investigations / United States Department of the Interior, Bureau of Mines ;$v4739
300   $a"October 1950."
320   $aIncludes bibliographical references (pages 9-11).
606   $aCoal mines and mining$xEquipment and supplies
615  0$aCoal mines and mining$xEquipment and supplies.
700   $aBrown$b Brinton C.$01414880
702   $aWright$b Fred D.
702   $aBallinger$b Homer J.
712 02$aUnited States.$bBureau of Mines,
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910707097003321
996   $aSome innovations in equipment for scaling high roofs and mine walls$93515345
997   $aUNINA