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15:01 Aug 15, 2006 |
Portuguese to English translations [Non-PRO] Tech/Engineering - Construction / Civil Engineering / construction | ||||
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| Selected response from: Lilma Schimmel (X) United States Local time: 02:31 | |||
Grading comment
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Summary of answers provided | ||||
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4 +2 | pillar extraction/ extraction of pillars |
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5 +1 | pier or pedestal |
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pillar extraction/ extraction of pillars Explanation: Bord (room) and Pillar extraction techniques. Advance and retreat longwall extraction techniques. Wongawilli pillar extraction techniques. ... www.surpac.com/minex_UGMine.asp ... of extraction of pillars in four panels in 6.0–8.0m thick coal seam, ... roof falls during pillar extraction. Numerical model studies based on finite ... www.springerlink.com/index/K0W6EGU60U26E8RB.pdf Colliery on pillar stability in order to determine the feasibility of pillar extraction. The. validity of applying empirical pillar analysis results to ... www.mines.unsw.edu.au/Publications/abstracts/WillsonRalling... In order to maximise reserves, pillar extraction will become more common in the Witbank ... 5 Seam, pillar extraction has not generally been carried out. ... www.simrac.co.za/report/Reports/thrust2/col026/col026.htm Full pillar extraction has always involved a basic contradiction. ... “partial” pillar recovery. Full pillaring was defined as extraction that ... www.cdc.gov/niosh/mining/pubs/pdfs/sofsf.pdf |
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1 hr confidence: peer agreement (net): +1
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