国产情侣真实露脸在线,美女张开腿让男人桶爽,久久久亚洲欧洲日产国码aⅴ,午夜一区二区亚洲福利vr

Key Projects

Key Projects

Home > CORPORATE BRANDS > Key Projects

WISCO Jinshandian Iron Ore Mine Project
DATE:15 Nov 2017 瀏覽次數(shù):1
+ . -

Jinshandian Iron Ore Mine, located in Jinshandian Town, Daye City, Hubei Province, is under Wuhan Iron & Steel Group Minerals Co., Ltd. and is among the four ferrous metallurgical mines that are difficult in mining. It consists of two mining area: Zhangfushan and Yuhuasi.

Pillarless sublevel caving method is adopted. The two mining areas of Zhangfushan and Yuhuasi are integrated and the primary production capacity of mine 1.5 million t/a is extended to 3 million t/a.

Main shaft and auxiliary shaft development is adopted for the mine. The depth of the main shaft is 924 m, and it was the deepest shaft at ferrous metallurgical mines. The application of one-time construction and equipping by stages reduced the effect on mine production in the transition from one stage to another. It is the first time to use double skip hoisting at ferrous metallurgical mines and the hoisting capacity is 3.5 million t/a. The modification and expansion project was put into production in 2007 with good operation.

国产精品爆乳在线播放| 亚洲视频日本有码中文 | 成人啪啪高潮不断观看| 日本无码人妻精品一区二区蜜桃| 日本熟妇色xxxxx欧美老妇| 精品久久久久香蕉网| 成在人线av无码免费| 日韩av影院在线观看| 久久久久琪琪去精品色一到本| 久久久久影院色老大2020| 少妇人妻偷人精品一区二区| 国产内射999视频一区| 国产午夜成人av在线播放| 人人妻人人爽日日人人| 中文字幕美人妻亅u乚一596| 久久久国产精品va麻豆| 综合无码一区二区三区四区五区| 亚洲粉嫩高潮的18p| 又大又爽又黄无码a片| 久久综合精品国产一区二区三区无| 亚洲人成77在线播放网站| av夜夜躁狠狠躁日日躁| 美女18禁一区二区三区视频| 免费人成在线观看| 婷婷开心激情综合五月天| 免费久久精品国产片| 狠狠亚洲婷婷综合色香五月| 无码加勒比一区二区三区四区| 无码少妇一区二区三区视频| 337p日本大胆欧美裸体艺术| 永久免费观看的毛片手机视频| 中文字幕无码不卡在线| 精品国产一区二区三区久久狼 | 国产精品成人国产乱| 天天摸夜夜添狠狠添婷婷| 激情影院内射美女| 日本免费人成视频播放| 不卡高清av手机在线观看| 乱人伦精品视频在线观看| 欧美兽交xxxx×视频| 国产精品一区二区久久国产|