نتایج جستجو برای: open pit mines

تعداد نتایج: 407524  

H. Nourali M. Osanloo,

One of the most important issues in all stages of mining study is capital cost estimation. Determination of capital expenditure is a challenging issue for mine designers. In recent decade, quite a few number of studies have focused on proposing estimation models to predict mining capital cost. However, these efforts have not achieved to a predictor model with reliable range of error. Both of ov...

Journal: :international journal of environmental research 2015
s.e. mhlongo f. amponsah-dacosta

abandoned surface mine excavations can be a major environmental, social and/or human healthproblem for the mining industry as well as for the community living nearby. this problem is exacerbated by therapidly growing population encroaching on areas of historic mined lands. the aim of this studywas to assess thesafety status of the historic nyala mine excavation with the purpose of coming up wit...

2013
Roger Cojean

1. Introduction Slopes in quarries and open pit mines, as well as all the types of embankments (stockpiles, tailing dams, waste dumps) resulting from mining and mineral processing activities, must be considered as "geotechnical structures". Therefore, the design and implementation of these structures must be conducted with all consideration. Considering an economical plan, the selection of reas...

2013
Michelle L. Blom Christina N. Burt Adrian R. Pearce Peter J. Stuckey

This document presents material supplementary to our companion paper A Decomposition-Based Heuristic for Collaborative Scheduling in a Network of Open-Pit Mines. In this companion paper, we consider the short-term production scheduling problem for a network of multiple open-pit mines and ports. Ore produced at each mine is transported by rail to a set of ports and blended into signature product...

2017
Parvin NASSIRI Mohammad Reza MONAZZAM Farideh GOLBABAEI Somayeh FARHANG DEHGHAN Athena RAFIEEPOUR Ali Reza MORTEZAPOUR Mehdi ASGHARI

The purpose of this article is to examine the applicability of Universal Thermal Climate Index (UTCI) index as an innovative index for evaluating of occupational heat stress in outdoor environments. 175 workers of 12 open-pit mines in Tehran, Iran were selected for this research study. First, the environmental variables such as air temperature, wet-bulb temperature, globe temperature, relative ...

Journal: :Bilimsel madencilik dergisi 2021

Since 2012, low commodity prices have forced many mining companies to suspend or cease operations. To remain in business, some mine managers are exploring strategies reduce operational costs. Given its importance as a cost element, increasing bench drilling efficiency and performance open-pit mines has the potential generate considerable savings. Efficiency gains can be realized by monitoring o...

Journal: :Applied Ecology and Environmental Research 2019

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