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Добро пожаловать Yantai Zlinktric Mining Equipment Co., Ltd.! [email protected]. English; România limbi; 한국어; Svenska; فارسی
2nd Ed. — , 2007. — 144 p. Foreword Talking Technically Trends in underground mining Geology for underground mining Mineral prospecting and exploration Finding the right balance in exploration drilling Underground mining infrastructure Principles of raise boring Mechanized bolting and screening Mining in steep orebodies Mining in flat …