Metal price is one of the most important parameters in the calculation of cut- off grade. The cut- off grade has the main role in determination of mine layout. Mine layout actuates mineable reserve, mine life and economic profitability. Not considering the uncertainty in metal prices can lead to a non-optimal layout. In this paper optimum underground mine layout is determined by expected utilit...

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this paper is focused on the tactical design of steel supply chain (ssc). a general mathematical model is proposed to integrate production and transportation planning in multi-commodity ssc. the main purpose is to prepare a countrywide production and distribution plan in an ssc with three layers consisting of iron ore mines as suppliers, steel companies as producers, and subsidiary steel compan...

Open pit mine production scheduling is a computationally expensive large-scale mixed-integer linear programming problem. This research develops efficient algorithm to solve open problems under uncertain geological parameters. The proposed solution approach for two-stage process. stochastic problem iteratively solved in the first stage after relaxing resource constraints using parametric graph c...

GoldSim is a powerful and flexible Windows-based computer program for carrying out probabilistic simulations of complex systems to support management and decision-making in engineering, science and business. The program is highly graphical, highly extensible, able to directly represent uncertainty, and allows you to create compelling presentations of your model. Although GoldSim can be used to ...

Purpose. To predict zones of increased water inflows based on geological exploration and mining-geological data in the real conditions an operating coal mine using method predictive evaluation prospects local structures for presence gas accumulations. Methodology. The research was carried out by constructing a map trend analysis. synclinal fold is allocated plan its main parameters – amplitude ...

A a common chronic illness among children and youth, affects one school-aged child in 11, or two to three students in a class of 30. Asthma accounts for 14 million lost school days each year. Students with asthma miss instruction while in the health room and may not be fully alert due to lack of sleep from night­ time asthma symptoms. Schools often lose funding for student absences. Schools are...

OBJECTIVE The purpose of this article is to describe the treatment of injuries resulting from land mine explosions using a holistic approach that includes gauze-based negative pressure wound therapy (NPWT) and encompasses wound bed preparation, exudate management, and infection control. METHOD In the treatment of 3 traumatic injuries, each requiring limb amputation, we describe the applicatio...