open pit coal mine operation process malaysia

Sep 23 2016 · Open pit mining • Open pit mining is the process of mining a near surface deposit by means of a surface pit excavated using horizontal benches 5 The shape of the excavation or mine vary depending upon the size and shape mineral matter 6 WHEN TO ADOPT OPENPIT MINING • The deposit should not deeper than 90m ie

Our Colombian mining operation includes the Mina Pribbenow and El Descanso openpit coal mines located in the Cesar Coal Basin Today we own and manage roughly 2 billion tons of reserves in La Loma El Descanso Rincόn Hondo Similoa and Cerrolargo the last three are in the process of environmental licensing

Openpit 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 found relatively close to the surface of the earth Openpits

Home Operation Coal Mining Process Share Operation Overview of Operations Resources Reserves Coal Mining Process Coal Mining Process Open Pit Mine The flow of coal mining process on open mining Topsoil removal Mining Stockpiling Hauling Ship loading View Flash Presentation Coal Fired Power Plant

The definition of a open pit mine is an excavation or cut made at the surface of the ground for the purpose of extracting ore and which is open to the surface for the duration of the mine’s life To expose and mine the ore it is generally necessary to excavate and relocate large quantities of waste rock

ADVERTISEMENTS Mining Operation Types Impacts and Remedial Measures Mining is the process of taking mineral and other substances from the earth These substances include metal compounds nonminerals such as coal sand oil and natural gas and many other useful things ADVERTISEMENTS Mining provides iron and copper for making aeroplanes refrigerators Mines

Here removal of overburden and coal extraction proceed in parallel strips along the face of the coal deposit with the spoil being deposited behind the operation in the previously mined areas In open pit mining thick seams tens of meters are mined by traditional quarrying techniques Underground mining is used for deep seams

The open pit is opening the orebody from the surface by separate removal of ore and associated waste rocks It is the most economic option for a deposit up to that depth where the economic ratio of ore and waste can sustain There are many advantages in openpit mining method namelyFull visualization of exposed orebody and negligible ore loss

Surface coal mining generally involves the following sequence of unit operations 1 clearing the land of trees and vegetation 2 removing and storing the top layers of the unconsolidated soil topsoil 3 drilling the hard strata over the coal seam 4 fragmenting or

Open pit and open cast methods employ a conventional mining cycle of operations to extract minerals rock breakage is usually accomplished by drilling and blasting for consolidated materials and by ripping or direct removal by excavators for unconsolidated