·of the project The application of geological studies to the actual mining process sometimes referred to separately as coal mining geology follows on after the mine begins operation Coal mining geology embraces a number of special skills and techniques but is otherwise essentially a continuation of exploration activities into the
·Coal mining face is the place where coal mine accidents occur this paper the security early warning expert system is buliled based on the analysis method of system engineering and
1 Before we start What is a process Let s get back to basics by defining processes first A process is a series of actions or steps repeated in a progression from a defined or recognized start to a defined or recognized finish The purpose of a process is to establish and maintain a commonly understood flow that allows a task to be completed efficiently and consistently
·Underground mining sometimes called deep mining is a process that retrieves coal from deep below the Earth s surface—sometimes as far as 300 meters 1 000 feet Miners travel by elevator down a mine shaft to reach the depths of the mine and operate heavy machinery that extracts the coal and moves it above ground
·• The mine is developed along a coal seam • The mine can be developed in tiers or contours parallel to the strike • As each strip is mined the waste rock is placed in the excavation produced by the previous strip Video of a strip mining operation Black Thunder Coal Mine Forms of Strip Mining There are two forms of strip mining
·mining process of extracting useful minerals from the surface of the Earth including the mineral with a few exceptions is an inorganic substance occurring in nature that has a definite chemical composition and distinctive physical properties or molecular structure One organic substance coal is often discussed as a mineral as well Ore is a metalliferous
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