Mining activity always has high impact on its surroundings, being waste deposition the cause of multiple and complex problems to the environment. One of them is Acid Mine Drainage (AMD), causing acid water percolation through large areas in the mine site. Portugal was a prosper tungsten producer from the beginning of the XX century, having its apogee during World War II. Nowadays there are mill...

A numerical simulation is carried out to study the effect of the thin metal outer case of an antitank mine and the top air gap of an antipersonnel mine on the passive infrared imaging signature. In addition, an antipersonnel surface mine is also analyzed in the present investigation to show its effect on the soil thermal content. The effect of shortand long-wavelength radiation as well as the c...

We study the question of closeness testing for two discrete distributions. More precisely, given samples from two distributions p and q over an n-element set, we wish to distinguish whether p = q versus p is at least ε-far from q, in either `1 or `2 distance. Batu et al [BFR00, BFR13] gave the first sub-linear time algorithms for these problems, which matched the lower bounds of [Val11] up to a...

Praktik manajemen organisasi telah menyaksikan transformasi besar selama beberapa tahun terakhir. Green Human Resources Management didefinisikan sebagai praktik SDM ramah lingkungan yang menganut penggunaan sumber daya secara berkelanjutan khususnya sektor industri penerbangan. Artikel ini mencoba untuk mengevaluasi pada keberlanjutan perusahaan. mengikuti tinjauan sistematis literatur akademik...

Short-term production plans are the basis for operational mine production schedules. They concentrate on making long-term mine plans operationally feasible. Furthermore, some variables such as ore grade and tonnage govern mine production systems and cause uncertainty in the supply of raw materials to the mills. Due to the quality variation of material, short-term production optimization is an u...

Hydrothermally formed rutile is a common mineral in porphyry Cu (-Au-Mo) deposits and has the potential to provide versatile information about physical-chemical conditions timing of mineralization. In this study, we investigated trace element composition U-Pb dates hydrothermal by LA-ICP-MS together with its petrographic context, four well-studied systems: Batu Hijau (Indonesia), Bingham Canyon...

Sediments recovered from the flooded mine workings of the Penn Mine, a Cu-Zn mine abandoned since the early 1960s, were cultured for anaerobic bacteria over a range of pH (4.0 to 7.5). The molecular biology of sediments and cultures was studied to determine whether sulfate-reducing bacteria (SRB) were active in moderately acidic conditions present in the underground mine workings. Here we docum...

Strategic researches on green mine construction are of great theoretical and practical significance to the sustainable development of China's mining industry as well as the great-leapforward development strategies of China. Strategies of green mine construction in China are methods summarized to solve all potential problems from mine production to ecological restoration. At present, strategies ...