bagger 288 excavator 288 , built by the german company krupp for the energy and mining firm rheinbraun, is a bucket-wheel excavator or mobile strip mining machine. when its construction was completed in 1978, bagger 288 superseded big muskie as the heaviest land vehicle in the world, at 13,500 tons.
the word 'turbine' was coined in 1822 by the french mining engineer claude burdin from the latin turbo, or vortex, in a memo, 'des turbines hydrauliques ou machines rotatoires à grande vitesse', which he submitted to the académie royale des sciences in paris.
the mining companies agreed to a clause, by which a ten-year history of mine work, coupled with x-ray or autopsy evidence of severe lung damage, guaranteed compensation. equally important was a 'rate retention' clause that allowed workers with progressive lung disease to transfer to jobs with lower exposure without loss of pay, seniority, or .
a dragline excavator is a piece of heavy equipment used in civil engineering and surface mining. draglines fall into two broad categories: those that are based on standard, lifting cranes, and the heavy units which have to be built on-site. most cler cranes, with an added winch drum on the front, can act as a dragline. these units are designed to be dismantled and transported over the road on flatbed trailers. draglines used in civil engineering are almost always of this smaller, crane type.
a machine is a mechanical structure that uses power to apply forces and control movement to perform an intended action. machines can be driven by animals and people, by natural forces such as wind and water, and by chemical, thermal, or electrical power, and include a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement. they can also include computers and sensors that monitor performance and plan movement, often called mechanical sys
renewable energy. many mining sites are remote and not connected to the grid. electricity is typically generated with diesel generators. due to high transportation cost and theft during transportation the cost for generating electricity is normally high. renewable energy applications are becoming an alternative or amendment.
the latest study of massachusetts institute of technology 'the future of geothermal energy – impact of enhanced geothermal systems egs on the united states in the 21st century' 2006 points out the essential importance of developing an economical deep geothermal boring technology. with current boring technologies, bore price rises exponentially with depth.
a tunnel boring machine tbm , also known as a 'mole', is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata.they may also be used for microtunneling.they can be designed to bore through anything from hard rock to sand.tunnel diameters can range from one metre 3.3 ft done with micro-tbms to 17.6 metres 58 ft to date.
p&h mining equipment designs, builds and supports a line of drilling and material handling machinery marketed under the 'p&h' trademark and applied to minerals and energy surface mining operations worldwide. the firm is an operating subsidiary of joy global inc. in 2017 joy global inc. was acquired by komatsu limited of tokyo, japan and is now .
basic element ltd. is one of the largest diversified industrial groups in russia founded in 1997 and owned by oleg deripaska. it is based in the british tax haven jersey the hq is in moscow. it was known as siberian aluminum until 2001.
these rely on supplying external energy to the reservoir by injecting fluids to increase reservoir pressure, hence increasing or replacing the natural reservoir drive with an artificial drive. secondary recovery techniques increase the reservoir's pressure by water injection, gas reinjection and gas lift.
eni s.p.a. italian pronunciation: is an italian multinational oil and gas company headquartered in rome.considered one of the seven 'supermajor' oil companies in the world, it has operations in 79 countries, and is currently world's 11th largest industrial company with a market capitalization of €68 billion us$90 billion , as of 14 august 2013. .
the upper big branch mine disaster occurred on april 5, 2010 roughly 1,000 feet 300 m underground in raleigh county, west virginia at massey energy's upper big branch coal mine located in montcoal.twenty-nine out of thirty-one miners at the site were killed. the coal dust explosion occurred at 3:27 pm. the accident was the worst in the united states since 1970, when 38 miners were killed at .
a hydraulic jackhammer, generally much larger than portable ones, may be fitted to mechanical excavators or backhoes and is widely used for roadwork, quarrying and general demolition or construction groundwork. these larger machine mounted breakers are known as rig mounted, or machine mounted breakers.
cengiz holding a.s. is a turkish conglomerate, with major interests in construction, energy, mining, and tourism.its assets include the eti copper and eti aluminium mining companies. it is owned by mehmet cengiz. in 2012 it had around $470m revenue from construction.
orano cycle, formerly cogema compagnie générale des matières nucléaires and areva nc, is a french nuclear company.it is the main subsidiary of orano s.a. the company was created in 1976 from the production division of the french government's cea english: atomic energy commission .it is an industrial group active in all stages of the uranium fuel cycle, including uranium mining .