Modern-Surface Mining When coal seams are near the surface‚ it may be economical to extract the coal using open cut (also referred to as open cast‚ open pit‚ or strip) mining methods. Open cast coal mining recovers a greater proportion of the coal deposit than underground methods‚ as more of the coal seams in the strata may be exploited. Large Open Cast mines can cover an area of many square kilometers and use very large pieces of equipment. This equipment can include the following: Draglines which
Premium Mining Coal
mind when you think of coal mining? If you’re like me‚ coal mining means living in darkness and a cold hearted industry. Other words that come to mind are poverty and oppression. Coal mining is not a job that you dream about or get a degree for. People who are coal miners do not chose a life full of danger and repression‚ they get stuck with it. There are many dangers that come along with coal mining‚ not only for the workers‚ but for the environment. Coal mining and the coal industry have caused
Premium Coal Air pollution Coal mining
The goal of coal mining is to obtain coal from the ground. Coal is valued for its energy content‚ and‚ since the 1880s‚ has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United States‚ United Kingdom‚ and South Africa‚ a coal mine and its structures are a colliery. In Australia‚ "colliery" generally refers to an underground coal mine. Coal mining has had many developments over the recent
Premium Coal Natural gas Fossil fuel
Chilean Mining Accident BCOM 275 Donald Marrin 4/8/12 Brittney Preece "On Aug. 5‚ 2010‚ a gold and copper mine near the northern city of Copiapó‚ Chile caved in‚ trapping 33 miners in a chamber about 2‚300 feet below the surface. For 17 days‚ there was no word on their fate. As the days passed‚ Chileans grew increasingly skeptical
Premium Occupational safety and health Mining English-language films
A NEW APPORACH OF FREQUENT PATTERN MINING IN WEB USAGE MINING Mrs.R.Kousalya PhD. Scholar‚ Manonmaniam Sundaranar University‚ HOD/Asst professor‚ Dr. N.G.P. Arts and Science College‚ Coimbatore-641 048‚ India Mob no. +91 9894656526 Kousalyacbe@gmail.com Ms.S.Pradeepa M.Phil.Scholar‚ Department of Computer Science‚ Dr.N.G.P. Arts and Science College‚ Coimbatore-641 048‚ India Mob no. +91 9489551185 Prathy.it@gmail.com Ms.K.Suguna M.Phil.Scholar‚ Department of Computer Science‚ Dr.N.G.P. Arts and
Premium Data mining Cluster analysis Data analysis
Antamina Case Study Analysis Introduction & Context The Antamina Mining Company (“CMA”) faced a set of critical decisions related to technical‚ logistical‚ political and financial challenges for establishing copper and zinc mining operations in a remote area of the Northern Peruvian Andes in the 1990s. This analysis is based primarily on the SEKN Case Study from March 5‚ 2007‚ entitled “Moving Mountains: The Case of the Antamina Mining Company”. Specifically‚ we considered the following
Premium Stakeholder Case study Project management
led to an ever lasting dispute about the reliability of technical analysis. Nonetheless‚ people’s curiosity about past data has never gone. Being different from the vast majority who use typical technical analysis‚ we decide to use predictive data mining techniques which we regard as interesting and accurate in our forecasting. Forecasting is an uncertain process and therefore a high accuracy is demanded. There are many forecasting techniques in the world. In general‚ they can be classified into
Premium Time series
National Wildlife Refuge. By emphasizing the evidences that degrade the development‚ the author attempts to persuade the readers to also be engaged in preserving Arctic Refuge. In order to effectively convey his thoughts‚ author used various literary techniques including personal anecdote‚ evidences‚ and dictions. Considering that The Arctic National Wildlife Refuge could sound unfamiliar for the readers‚ the author first provides brief introductions about what it is (“America’s truly great wilderness”);
Premium United States World War II Canada
The mining sector is made up of organisations whose primary activity is the extraction of naturally occurring mineral solids or natural resources. Examples of these types of minerals are coal‚ ores and precious stones. The mining industry also broadly covers quarrying and well operations. The sector comprises two basic activities: mine operations and mining support activities. "Mine operations" involve setting up the mine‚ quarry or well for the organization‚ or on behalf of another organization
Premium Mining Rio Tinto Group BHP Billiton
Early Mining in Colorado The 1850’s brought various types of mining to the Colorado Rockies; gold‚ silver‚ and coal. First‚ the Pike’s Peak Gold Rush in 1859 brought thousands of prospectors to the Front Range‚ and coal mining began shortly after. The Colorado Silver Boom followed in 1879‚ when major amounts of silver were discovered in Leadville‚ CO. The conditions for miners gradually became dire‚ resulting in numerous retaliatory strikes which were met with extreme‚ sometimes violent‚ opposition
Premium Mining Colorado Strike action