000184676 000__ 01451mam\a2200397\a\4500 000184676 001__ 184676 000184676 005__ 20220217103646.0 000184676 007__ heubmb024bbca 000184676 008__ 930511s1993\\\\dcua\\\\bb\\\f000\0\eng\d 000184676 011__ $$a92-23498//r93 000184676 035__ $$a(OCoLC)ocm28087181 000184676 035__ $$9AAV3425SI 000184676 035__ $$a184676 000184676 040__ $$aMNM$$cMNM$$dGPO 000184676 043__ $$an-us-pa 000184676 049__ $$aISEA 000184676 074__ $$a0637-A (MF) 000184676 0860_ $$aI 28.23:9444 000184676 090__ $$aTN23$$b.U43 no. 9444$$aTN288 000184676 1001_ $$aListak, Jeffrey M. 000184676 24510 $$aLongwall retreat of gate road pillars$$h[microform] /$$cby J.M. Listak and E.R. Bauer. 000184676 260__ $$aWashington, D.C. (810 7th St., N.W., Washington 20241-0001) :$$bU.S. Dept. of the Interior, Bureau of Mines,$$c1993. 000184676 300__ $$a11 p. :$$bill. ;$$c28 cm. 000184676 4901_ $$aReport of investigations ;$$v9444 000184676 500__ $$aDistributed to depository libraries in microfiche. 000184676 500__ $$aShipping list no.: 93-0417-M. 000184676 504__ $$aIncludes bibliographical references (p. 11). 000184676 533__ $$aMicrofiche.$$b[Washington, D.C.?] :$$cSupt. of Docs., U.S. G.P.O.,$$d[1993]$$e1 microfiche : negative. 000184676 650_0 $$aGround control (Mining)$$zPennsylvania. 000184676 650_0 $$aPillaring (Mining) 000184676 650_0 $$aLongwall mining$$zPennsylvania. 000184676 7001_ $$aBauer, Eric R. 000184676 7101_ $$aUnited States.$$bBureau of Mines. 000184676 7760_ $$cOriginal$$w(OcoLC) 26362040 000184676 830_0 $$aReport of investigations (United States. Bureau of Mines) ;$$v9444. 000184676 85230 $$bdfich$$hI 28.23:$$i9444 000184676 909CO $$ooai:library.usi.edu:184676$$pGLOBAL_SET 000184676 948__ $$ac:mm 000184676 980__ $$aBIB 000184676 980__ $$aGOV RESOURCE