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Domestic H caliber rope core drilling hole depth and innovative record

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Domestic H-caliber wire-line coring borehole depth is a new record - August 27, 2017, Shandong Geological and Mineral Exploration and Development Bureau Third Geological Brigade, the application of the CHD98 standard drill pipe, drilling tools in Shandong Laizhou Wuyi Gold Mine, scientific drilling construction, hole depth of 3266.06 meters, which is the unit's application of diamond products once again refreshed Domestic H caliber rope coring hole depth record.