Jul 31 2017 · Open pit mining 1 1 OPEN PIT MINING by Prof A Balasubramanian Centre for Advanced Studies in Earth Science UNIVERSITY OF MYSORE MYSORE6 2 2 Introduction Open pit mining is the process of mining a near surface deposit by means of a surface pit excavated using one or more horizontal benches
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Get PriceMining Mining Surface mining It has been estimated that more than twothirds of the world’s yearly mineral production is extracted by surface mining There are several types of surface mining but the three most common are openpit mining strip mining and quarrying These differ from one another in the mine geometries created the techniques used and the minerals produced
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Get PriceOpenpit mining also known as opencast mining is a surface mining technique that extracts minerals from an open pit in the ground Openpit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels This surface mining technique is used when mineral or ore deposits are
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Get PriceMining Influenced Water MIW Not limited to low pH Allows for characteristics other than low pH Elevated Fe andor Al concentrations elevated nonFeAl metal concentrations elevated sulfate concentrations elevated total suspended solids Each requires a different approach to sampling monitoring and control Characteristics are a function of geologymineralogy
Get Price1131 Openpit mining Openpit mining is a type of strip mining in which the ore deposit extends very deep in the ground necessitating the removal of layer upon layer of overburden and ore In many cases logging of trees and clearcutting or burning of vegetation above the ore deposit may precede removal of the overburden The
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