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Coal mining

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. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a 'pit

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Glossary of Mining Terms

A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the face.

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Fatal Accidents Due To Flyrock And Lack Of Blast Area

3. Coal Mine, Campbell County, TN: On June 4, 1993, a 16-year-old passenger, in a car driven by his parent on interstate 75 (I-75), was fatally injured by flyrock originating from an overburden blast in a nearby coal mine [Shea and Clark, 1998]. The closest blasthole was within 75 ft of the Right of Way (RoW) and 225 ft from the I-75 pavement.

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Coal on the coast: between a rock and a hard place

Plagued by fire during its working life, parts of the mine are said to be still burning, fed by air that makes its way through broken rock to the smouldering coal. Other mines went the same way: McCabe's mine in 1969, the Fly Creek mine in 1970, the Webb in 1979.

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Indiana Coal Mine Safety

Recent Coal Mine Fatalities July 16th, Kentucky, CAM Mining LLC. A mechanic with 20 years of mining experience was fatally injured at a surface mine when he was struck by fly rock from blasting operations. The victim and another mechanic had just completed their shift in an equipment parking/service area approximately 1,500 feet from the area

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Blasting in West Virginia Mines

Fly rocks — When a blast is ignited, the resulting explosion can send rocks flying, sometimes in unexpected directions and for surprising distances. These fly rocks can damage homes, block roadways and injure people. Release of toxic materials — The earth comprises countless unstable and toxic natural substances. Kept underground, these

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Radioactive Elements in Coal and Fly Ash, USGS Factsheet

Nov 29, 2016The vast majority of coal and the majority of fly ash are not significantly enriched in radioactive elements, or in associated radioactivity, compared to common soils or rocks. This observation provides a useful geologic perspective for addressing societal concerns regarding possible radiation and radon hazard.

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(PDF) safety in surface mining looking at the main hazards.

Sep 30, 2016Sep 30, 2016a description of fly-rocks during surface blasting and their implications in and out of the mining perimeter [22]. +16 all the mitigating factors shown in

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An Analysis and Prevention of Flyrock Accidents in Surface

were used in coal mining, 1.17 billion pounds (21.1%) in metal and nonmetal mining, and 417 million pounds (7.5%) in construction blasting [USGS, 2003]. This paper presents a brief account of injuries due to fl yrock and lack of blast area security in surface mines and elucidates mitigation techniques.

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Coal Combustion Byproducts, Kentucky Geological Survey

Sep 24, 2019Sep 24, 2019Fly ash is the fine particulate (including ash, dust, soot, and cinders) material produced from coal combustion. It consists of the mineral matter in the coal which did not combust in the furnace, and did not settle to the bottom of the boiler as bottom slag or bottom ash.

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Co

Apr 29, 2021Waste rocks (WRs) from a lignite-producing coalfield and fly ash (FA) produced from the same lignite have been investigated in this study with a primary objective to determine the potential for co-disposal of WRs and FA to reduce the environmental contamination. Mixing WRs with FA and covering WRs with FA have been investigated. Particle size effect caused ≤2 mm particles to produce

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PROCEDURES FOR BLASTING

rock. It's important that the Blaster make sure that all personnel are outside the blasting area where fly rock can be expected. 2. Vibrations Blasting generated vibrations can damage underground and aboveground structures. When the Contractor is using a seismograph to monitor vibrations on

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Effects of the co

Lignite fly ash (FA) and waste rocks (WRs) were mixed in three different ratios (1:1, 1:3 and 1:5) and studied to compare the effects of adding FA on acid mine drainage generation from coal mining WRs, leachability of elements and the potential occurrence of the secondary minerals. FA mixed with WRs

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Coal and the environment

Dec 01, 2020Surface mines (sometimes called strip mines) were the source of about 62% of the coal mined in the United States in 2019. These mining operations remove the soil and rock above coal deposits, or seams. The largest surface mines in the United States are in Wyoming's Powder River Basin, where coal deposits are close to the surface and are up to

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