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Double the utilization rate of new technology stone resources using "wheel saw"
The Yantai Municipal Bureau of Land and Resources of Shandong Province implemented the scientific development concept, encouraged mining enterprises to carry out technological transformation, and effectively improved the recovery rate of mining enterprises, the recovery rate of mineral processing and the comprehensive utilization rate of resources. The mining loss rate and the depletion rate in 2011 were 4.40% and 4.30%, respectively. 111 of the 155 facing stone mines in the city have used the wheel saw mining technology, and the utilization rate of stone mine resources has increased from less than 40% to over 80%.