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The mining industry contributes between 4 and 7% of global greenhouse gas emissions. [18] The production of greenhouse gases, such as CO 2 and CH 4, can occur both directly and indirectly throughout the mining process and can have significant impacts on global climate change. [19]
In addition, there have been many coal mining disasters, although work related coal deaths has declined substantially as safety measures have been enacted and underground mining has given up market share to surface mining. [citation needed] Underground mining hazards include suffocation, gas poisoning, roof collapse and gas explosions.
Environmental impact of fracking in the United States has been an issue of public concern, and includes the contamination of ground and surface water, methane emissions, [1] air pollution, migration of gases and fracking chemicals and radionuclides to the surface, the potential mishandling of solid waste, drill cuttings, increased seismicity and associated effects on human and ecosystem health.
This is an accepted version of this page This is the latest accepted revision, reviewed on 24 January 2025. Gas in an atmosphere with certain absorption characteristics This article is about the physical properties of greenhouse gases. For how human activities are adding to greenhouse gases, see Greenhouse gas emissions. Greenhouse gases trap some of the heat that results when sunlight heats ...
Coal extraction methods vary depending on whether the mine is an underground mine or a surface (also called an open cast) mine. Additionally, coal seam thickness and geology are factors in the selection of a mining method. The most economical method of coal extraction for surface mines is the electric shovel or drag line.
Geological sequestration refers to the storage of CO 2 underground in depleted oil and gas reservoirs, saline formations, or deep, coal beds unsuitable for mining. [106] Once CO 2 is captured from a point source, such as a cement factory, [107] it can be compressed to ≈100 bar into a supercritical fluid.
The Cannington Silver and Lead Mine is an Australian underground mine located in north-west Queensland, in the Shire of McKinlay, about 200 kilometres (124 mi) southeast of Mount Isa. The deposit was discovered by BHP in 1990. [1] The mine was the supplier of silver for the Sydney 2000 Summer Olympics and the Beijing 2008 Summer Olympics. [2]
A 16-part assessment of methane leakage from natural gas production initiated by the Environmental Defense Fund [39] found that fugitive emissions in key stages of the natural gas production process are significantly higher than estimates in the EPA's national emission inventory, with a leakage rate of 2.3 percent of overall natural gas output.