open cut mining diagram
Mar 13, 2018· Open pit mining does offer some advantages over traditional deep shaft mining. Pit mining is more cost effective than shaft mining because more ore can be extracted and more quickly. The working conditions are safer for the miners because there is no risk of cave in or toxic gas. Open pit mining is the preferred ...
Selective mining methods. Cut and fill mining is a method of short-hole mining used in steeply dipping or irregular ore zones, in particular where the hanging wall limits the use of long-hole methods. The ore is mined in horizontal or slightly inclined slices, and then filled with waste rock, sand or tailings
Aug 18, 2015· Mining operations are complex. They aren't your run-of-the-mill type projects. These billion dollar complexes consist of various interconnected projects, operating simultaneously to deliver refined commodities like gold, silver, coal and iron ore. It's a five stage process and we've broken it down using GIFs. Exploration
Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining.Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface.
This flowchart made of machinery icons explains or expresses in simple but clear terms the step of the Copper Mining and Copper Extraction Process. Starting from either open-pit or underground mining and using a different relevant treatment method for oxide or sulphide copper mineral (ore). Having a quick look now at how porphyry ores are treated and the metals extracted.
INTRODUCTION TO MINING 1.1 MINING'S CONTRIBUTION TO CIVILIZATION ... If the excavation used for mining is entirely open or operated from the surface,it is termed asurfacemine.If the excavation consists of openings for human entry below the earth's surface,it is called an undergroundmine.
Open cut hard rock mining (Kalgoorlie, Western Australia). Coal mining equipment at the Coal Mining Heritage Park. Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity.
Open Cut Mining There are many differences between open cut and underground mining. When minerals and deposits are found close to the surface and spread across a large distance, the best way to mine is to use the open cut mining method.
Having been worked in an open cast(OC) metal mine for 3 years, I can give some insight on the negative effects of OC mining in India at least. The first two images show how open cast and underground mining is done. Open cast mine Underground mine ...
NSW has both open-cut and underground mines. Open-cut mining. Open-cut mining usually happens where mineral deposits are close to the surface. It involves blasting and removing surface layers of soil and rock to reach the mineral deposit. When the mineral seam becomes exposed, it is drilled, fractured and the mineral recovered for processing.
OPEN CAST (STRIP) MINING M.K. MC C ARTER, MARK L. BRICKER, G. PAUL ANDERSON, STEVEN J. KIRK, ... Block-cut mining can be applied to either area or contour mining. This method differs from conventional area and contour ... This diagram allows planning of cuts and excavator moves. Careful planning is necessary to ensure
Coal Mining Methods Underground Mining Longwall & Room and Pillar Mining Longwall mining and room-and-pillar mining are the two basic methods of mining coal underground, with room-and-pillar being the traditional method in the United States. Both methods are well suited to extracting the relatively flat coalbeds (or coal seams) typical of
Mar 02, 2016· Open-pit mining which is sometimes referred to as open cut mining, opencast mining or simply strip mining is a mining technique that extracts important minerals from a borrow or an open pit. There are two types of mining methods commonly used in large scale mineral mining; open pit mining and tunneling. Open pit mining is […]
1.1 PHASES OF A MINING PROJECT There are different phases of a mining project, ... especially if access roads cut through ecologically 1. Overview of Mining and its Impacts1 ... 184.108.40.206 Open-pit mining Open-pit mining is a type of strip mining in which
Developments in Open Cut Mining Overview D Miller The Australasian open cut mining sector is dominated by iron ore, coal and gold producing operations. This has been so for the past 20 years. The ...
Mining and production at Boddington gold mine. Built on the footprint of the original Boddington gold mine, the operation involves open cut mining from two large pits and is expected to produce an average 850,000oz of gold and 30,000t of copper a year for more than 20 years.
Open Pit Mine Design, Planning and Engineering. ... The methodology focuses on pit optimisation to determine the cut-off strategy, economic mining depth, size and scale of operation. We are dedicated to identify the best option for project development and produce client-focused solutions to technical challenges. ... and prediction of ...
Open-pit mining methods are applicable to mining ore deposits that apex at or near the surface. If the deposit apexes below the surface, the overburden and barren capping overlying the ore must be removed in advance of open-pit mining. The removal of this material is known as stripping.
Open-pit mining is much safer than shaft mining. In underground mining, the threat of a cave-in or release of toxic gas is a constant concern. When shaft mining was the most common method of ore extraction, thousands died in cave-ins, gas events and accidents involving equipment. In 1907 alone, more than 3,200 deaths related to mining occurred.
Diagram of events Fatal Accident 29 October 2003 Open Cut Mining Operations Mantos Blancos Division. 29-Oct 12:20 Open cut Mine AA Chile As a result of rocks falling from the slope, and breaking up on the floor of bench 684, one of these fragments hits the pick-up in the side, on the
Jan 16, 2018· Open-cast mining has several advantages compared to underground mining, these are:- * Open-cast allows for high tonnages to be moved hence economies scale * Safe as workers are not working under disturbed roof * Open-cast trucks have higher payloa...
Open-pit Mining Open-pit mining, also known as opencast mining, open-cut mining, and strip mining, means a process of digging out rock or minerals from the earth by their elimination from an open pit or borrow. The word is used to distinguish this type of mining from …
Advantages of Underground Mining are: * It allows minerals to be extracted from deep underground * It doesn't create a mess like open cut or surface mining * Does not affect the physical ...
Fig. 1, above shows an illustration of a Open Pit Surface Mine. 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."
What Are the Disadvantages of Opencast Mining? Opencast mining, also known as surface mining or strip mining, has disadvantages that include disturbance of the environment and local ecosystems, exposure of radioactive elements and contamination of freshwater sources. The use of heavy machinery and blasting techniques also create environmental ...
Mar 13, 2012· What is Opencast Mining• Opencast mining is also known as Open pit mining, Open cut Mining, Surface or Strip Mining.• The coal upto economical depth will be excavated by OC Method.• The current operating depth of OC mines in SCCL is about 200m and SCCL proposed to operate OC mines upto a depth of 420m. Ex: MNG OC II Extension Project.•
Surface Coal Mining Methods in Australia 5 2. Open cut mining methods strip mining Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining. The mines are now operating at significantly higher annual tonnages, growing deeper, more complex and