نتایج جستجو برای: pit mine

تعداد نتایج: 31844  

Journal: :Jurnal teknologi mineral dan batubara 2023

PT. Bukit Asam Tbk is an open-pit coal mining company in Muara Enim, Soutgh Sumatra. In activities, slope stability analysis carried out to evaluate the mine order create a safe process. Several types of failure are associated with geological structures. This research was conducted identify type landslides low wall area Pit X and determine factor based on discontinuity data using scanline metho...

2014
José Saavedra-Rosas Enrique Jélvez Jorge Amaya Nelson Morales

A crucial problem in the mining industry is to determine the optimal sequence of extraction of blocks, in which the mine has been structured for exploitation. Typically a mine can be constituted by several thousands or millions of blocks. The sequencing models for this structure are very complex giving rise to very large combinatorial linear models. Operational mine plans are usually produced o...

Journal: :Management Science 2016
Michelle L. Blom Adrian R. Pearce Peter J. Stuckey

We consider the multiple time period short-term production scheduling problem for a network of multiple open-pit mines and ports. Ore produced at each mine, in each period, is transported by rail to a set of ports and blended into products for shipping. Each port forms these blends to a specification, as stipulated in contracts with downstream customers. This problem belongs to a class of multi...

Journal: :Journal of The South African Institute of Mining and Metallurgy 2023

Coal mining in China is facing the transition from output to quality. Based on total capacity and average production, current situation of coal at mine, city, province levels analysed, data support for layout sustainable development optimization provided. The results show that 87% China's mined by underground methods, with an production 0.93 Mt/a per mine. Open pit accounts 13%, mine 5.73 Mt/a....

2015
A. Qadi A. Boivin W. Jamroz R. Kruzelecky K. Olsen A. Tremblay

The Canadian Space Agency (CSA), through its Analogue Missions program, supported a microrover-based analogue mission designed to simulate a Mars rover mission geared toward identifying and characterizing methane emissions on Mars. The analogue mission included two, progressively more complex, deployments in open-pit asbestos mines where methane can be generated from the weathering of olivine i...

Journal: :journal of mining and environment 0
hesam dehghani department of mining engineering, hamedan university of technology, hamedan, iran ashkan siami department of mining engineering, hamedan university of technology, hamedan, iran peyman haghi department of mining engineering, hamedan university of technology, hamedan, iran

one of the most important steps involved in mining operations is to select an appropriate extraction method for mine resources. after choosing the extraction method, it is usually impossible to replace it with another one because it may be so expensive that implementation of the entire project could be economically impossible. choosing a mining method depends on the geological and geometrical c...

Journal: :Journal of environmental quality 2002
M E Winter Sydnor E F Redente

The Summitville Mine was a high-elevation (3500 m) gold mine in southwestern Colorado. The mine was abandoned in 1992, leaving approximately 200 ha of disturbance comprised partially of an open pit, a cyanide heap leach pad, and two large waste rock piles. Reclamation of these mine facilities is challenging due to extreme climatic conditions in conjunction with high acid-production potential an...

One of the most important steps involved in mining operations is to select an appropriate extraction method for mine resources. After choosing the extraction method, it is usually impossible to replace it with another one because it may be so expensive that implementation of the entire project could be economically impossible. Choosing a mining method depends on the geological and geometrical c...

Journal: :International Journal of Mining Science and Technology 2019

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید