Results 21 to 30 of about 31,862 (304)
Discussion on the stability evaluation standard of a rock slope in a noncoal open-pit mine
工程科学学报, 2022 As an important way to obtain mineral resources, open-pit mining has accounted for about 77% of the total production of the mined iron ore, and about 52% of the total production of non-ferrous ore, indicating huge development potential.
Shun-chuan WU +5 more
doaj +1 more source
Open pit uranium mines, including Zee pits
, 2022 Date scanned: 2002-7-18.Figure 4 Black and white print of a color infrared photograph showing open pit uranium mines. NASA Photograph 58-0007, May 1974.Related image: U1637.Donor: United States Bureau of Mines.Open pit uranium mines, including the sites ...
core
Meitan xuebaoThe use of fly ash mineralized CO2 material for preventing coal spontaneous combustion and storing CO2 is a new path of resource utilization that balances environmental benefits and engineering application value.
Yuntao LIANG +7 more
doaj +1 more source
Electrification Alternatives for Open Pit Mine Haulage
Mining, 2023 Truck-Shovel (TS) systems are the most common mining system currently used in large surface mines. They offer high productivity combined with the flexibility to be rapidly relocated and to adjust load/haul capacity and capital expenditure according to market conditions.
Haiming Bao +3 more
openaire +5 more sources
Meitan kexue jishuOpen-pit coal mining and ecological restoration jointly drive significant changes in the mine ecosystem. In the new era, monitoring and evaluation of mine land reclamation and ecological restoration consider ecosystem degradation and recovery as ...
Yongjun YANG +5 more
doaj +1 more source
, 2022 This photo, taken about 1880, indicates the simple pick-and-shovel mining methods employed to extract iron ore from the Cornwall open pit mine at that time. In the 1880s, the mine was operated by the Cornwall Ore Banks [sic] Company.
core
Unconventional ResourcesWith the increasing depletion of conventional oil and gas resources, deep to ultra-deep petroleum resources have become a critical direction for global energy strategies. The scientific evaluation of highly-to overmature source rocks developed in deep to
Zhuanghao Peng +9 more
doaj +1 more source
, 2022 #11; Evergreen Mines Company, Alice Mine. Area of blast seen in No. 7. Eveleth, Minnesota. - October 1941.Date scanned: 2002-6-12.Held in the Russell L.
core
Meitan xuebaoAlthough tunnel structures are confined by the surrounding strata, and relative movement between the structure and strata is not obvious under seismic loads, resulting in significantly superior seismic performance compared to surface structures, they are
Yujing JIANG, Xingda WANG, Xuepeng ZHANG
doaj +1 more source
Meikuang Anquan, 2020 In order to study the comprehensive treatment and utilization ideas of environmental geological disasters in mining city open-pit mines, the distribution of mining cities across the country have been investigated.
MIAO Haibin, ZHAO He, WANG Haiyang
doaj +1 more source