Layer by layer mining method
that is, to dig all around the next grid
the advantage is that the contact surface is more extensive
mckuai has related resources, you can find them online
In fact, Fengzi mining method only improves the efficiency, and there is no way to increase the probability of diamond occurrence
Shanxi Binxian Shuiliandong Coal Co., Ltd. is located in the west of Binxian County, Xianyang City, about 5 kilometers away from Changwu County, about 30 kilometers away from the West. The administrative division is under the jurisdiction of Chengguan town. It is adjacent to national highway 312 and Fuzhou Yinchuan Expressway in the north, 1 or 5 km away from national highway 312. The planned Xi'an Pingliang railway passes through the south of the mine from east to west, and the provincial road Binxian Linyou highway passes through the south of the mine. The mine is 157 km away from Xi'an City, 35 km west to Changwu County, and intersects with Baoqing highway
in October 2006, Xinwen Mining Group Co., Ltd. took over the control and cooperated with Xinwen Mining Group Co., Ltd., Chengguan Town, Binxian County, Zhejiang huhao group and natural person shareholders. Among them, Xinwen Mining Group Co., Ltd. accounted for 85%, which is a joint-stock cooperative enterprise. The mine geological resources are 50.35 million tons. The average thickness of the coal seam is 10.5m. It is characterized by low and medium ash, medium and high volatile, low sulfur, high calorific value, low phosphorus, excellent thermal stability and crushing strength. It is a good power fuel. Designed by the Design Institute of Xinwen Mining Group Co., Ltd., the technical transformation is carried out according to the proction capacity of 900000 tons / year< br />
shuilian cave is located at the height of 40-47 meters of Huangguoshu waterfall, with a total length of 134 meters. It has six windows, five halls, three springs and six passages
through shuilian cave, there is also a wonderful spectacle. You can see the rainbow on Rhinoceros Pool from the windows of each cave. The rainbow here is not only a colorful double channel, but also dynamic. As long as the weather is fine, you can see it from 9am to 5pm, and it changes and moves with your walking.