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Subject: haulage ramp mining. Здравствуйте, подскажите, пожалуйста, haulage ramp?The main haulage ramp carries the exhaust air from the 153 OB and MOB to the old workings of Coleman Mine,Levack Mine, and Fecunis Shaft. Underground booster fans pull air from the ore bodies and then push the exhaust through the old workings into raises to surface. Спасибо! |
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| Спасибо! |
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