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    Patent US1401716Pulverizer or grinding Pulverizer or grinding machine US 1401716 A Abstract available in Images (2) Claims available in Description (OCR text may contain errors) e pulve powder basalt rock Basalt

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  • Underground mining (hard rock)Wikipedia

    Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also

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    What you need is what we can do! In the future, Xinhai will continue to rely on three big supporting "technology, talents, management", adhere to the international development strategy, and concentrate on providing customers with modern, efficient, energy-saving mine overall construction and operational solution, to create international leading enterprises in mining industry.