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How many meters is the deepest mine in Beiya, Heqing, Yunnan?

Nearly 300 meters, the mine has passed many geological explorations by Yunnan Geology and Mineral Resources Co., Ltd., and its gold reserves have reached a super-large scale, with good development and production benefits, ranking among the world-class giant gold deposits. In addition to gold, Beiya mining area has also proved silver reserves of more than 1 10,000 tons, which is a world-class giant deposit.