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020 _a9780873354929
041 _aeng
100 _aJarrett E. Carlson-Gregg W. Davidson
245 0 _aRapid Excavation and Tunneling Conference 2021 Proceedings
260 _bSociety for Mining, Metallurgy, and Exploration, Inc.
260 _c2021
650 _a Mining
650 _aExcavation--Congresses.,Tunneling--Congresses.,Underground construction--Congresses.
650 _aTECHNOLOGY & ENGINEERING
856 _3Click here to access online
856 _uhttps://search.ebscohost.com/login.aspx?direct=true&db=e000xww&site=ehost-live&scope=site&AN=2935877
942 _cEBK
999 _c214451
_d214451