INTRODUCTION This study focused on using analytical and numerical models to develop and manage groundwater resources, and predict the effects of management measurements in the groundwater system. Movement of contaminants can be studied based on groundwater flow characteristics. This study can be used for prediction of ion concentration and evaluation of groundwater pollution as the theoretical ...

The use of mixed integer programming is a modeling approach well suited to formulate the mine scheduling optimization problem for both open pit and underground mining. The resolution applied for discretizing the problem, however, has a direct effect on both the level of selectivity that can be applied to improve profitability, as well as the computational feasibility. The proposed model allows ...

This work focuses on the physical-chemical characterization of a mining effluent affected by acid mine drainage (AMD) from its source to confluence in Odiel river, one most polluted rivers AMD worldwide, order understand reactions involved modifications chemical characteristics water and precipitates resulting water–rock–atmosphere interaction an environment highly activity without corrective m...

Conventional open pit mine optimization models for designing mining phases and ultimate pit limit do not consider expected variations and uncertainty in metal content available in a mineral deposit (supply) and commodity prices (market demand). Unlike the conventional approach, a stochastic framework relies on multiple realizations of the input data so as to account for uncertainty in metal con...

The open-pit mining problem is to determine the contours of a mine, based on economic data and engineering feasibility requirements in order to yield maximumpossible net income. This practical problem needs to be solved for very large data sets. In practice, moreover, it is necessary to test multiple scenarios taking into account a variety of realizations of geological predictions and forecasts...

The Springdale Pit, a former surface mine in Tamaqua, Pennsylvania, is used to store coal combustion waste produced by power plants in Pennsylvania, New Jersey, and New York. When states rule that minefilling is a " beneficial use " of CCW, it is exempt from environmental safeguards that would be applied to disposal sites.

We present an integer programming formulation for the open pit mine production scheduling problem. We strengthen this formulation by adding inequalities derived by combining the precedence and production constraints. The addition of these inequalities decreases the computational requirements to obtain the optimal integer solution, in many cases by a significant margin. & 2010 Elsevier Ltd. All ...

In order to reduce the large rocks produced by blasting of hillside open-pit mine with heterogeneous and complex rock mass in arid area, based on lithology characteristics Dabancheng Limestone Hillside Open-pit Mine Hongshun, Xinjiang, key technology for homogeneous is proposed this paper. We can conclude from experiment that (1) it preferable have a detonation network realizes multi-stage mill...

The fortuitous discovery of a middle Archaic burial at an open site on the shore of Utah Lake in the eastern Great Basin, therefore, is important as it provides scarce information about: 1) burial patterns; 2) the health and stature of indigenous populations; 3) ideology; and 4) the relationship between dogs and people during the mid-Archaic Period. Copyright Information: All rights reserved un...

We present a methodology for long-term mine planning based on a general capacitated multicommodity network flow formulation. It considers underground and open-pit ore deposits sharing multiple downstream processing plants over a long horizon. The purpose of the model is to optimize several mines in an integrated fashion, but real size instances are hard to solve due to the combinatorial nature ...