Mining is the extraction of valuable geological materials from the Earth and other astronomical objects. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Ore must be a rock or mineral that contains valuable constituent, can be extracted or mined and sold for profit. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water.
Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance or energy. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.
The rare-earth elements (REE), also called the rare-earth metals or rare-earths or, in context, rare-earth oxides, and sometimes the lanthanides, are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals. Compounds containing rare-earths have diverse applications in electrical and electronic components, lasers, glass, magnetic materials, and industrial processes.
Coal mining is the process of extracting coal from the ground or from a mine. 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', and the above-ground structures are a 'pit head'. In Australia, "colliery" generally refers to an underground coal mine.
Heavy industry is an industry that involves one or more characteristics such as large and heavy products; large and heavy equipment and facilities ; or complex or numerous processes. Because of those factors, heavy industry involves higher capital intensity than light industry does, and it is also often more heavily cyclical in investment and employment.
Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through shafts or tunnels.
Teck Resources Limited, known as Teck Cominco until late 2008, is a diversified natural resources company headquartered in Vancouver, British Columbia, that is engaged in mining and mineral development, including coal for the steelmaking industry, copper, zinc, and energy. Secondary products include lead, silver, gold, molybdenum, germanium, indium and cadmium. Teck Resources was formed from the amalgamation of Teck and Cominco in 2001.
Linfen is a prefecture-level city in the southwest of Shanxi province, China, bordering Shaanxi province to the west. It is situated along the banks of the Fen River. It has an area of 20,275 square kilometres (7,828 sq mi) and according to the 2020 Census, a population of 3,976,481 inhabitants of which 959,198 live in the built-up area made up of Yaodu urban district. The GDP of Linfen ranked second in Shanxi Province. It was known as Pingyang (平陽) during the Spring and Autumn period. In 2006, the American Blacksmith Institute listed Linfen as one of the ten most polluted cities in the world.
Environmental issues in Tajikistan include concentrations of agricultural chemicals and salts in the soil and groundwater, poor management of water resources, and soil erosion. Additionally, because of inadequate sanitation facilities, untreated industrial waste and sewage combine with agricultural runoff to cause water pollution in the Aral Sea Basin. Soviet-Era mining operations in Tajikistan extracted and processed uranium, gold, antimony, tungsten, mercury, and molybdenum, each of which is known to leave toxic waste that also threatens water quality. Pockets of high air pollution caused by industry and motor vehicles have resulted in Tajikistan ranking 133rd in the world in greenhouse gas emissions. Air pollution is a particular problem during times of the year when atmospheric conditions hold industrial and vehicle emissions close to the surface in urban areas. In summer, dust and sand from the deserts of Uzbekistan and Turkmenistan cause air pollution across the entire southwestern lowland region.
Pure Earth is a New York City-based international not-for-profit organization founded in 1999 that works to identify, clean up, and solve pollution problems in low- and middle-income countries, where high concentrations of toxic pollution have devastating health impacts, especially on children. These communities suffer disproportionately from pollution-related diseases. Pure Earth remains the only significant organization of its kind working to solve pollution on a global scale.
The mining industry of the Democratic Republic of the Congo produces copper, diamonds, tantalum, tin, gold, and more than 63% of global cobalt production. Minerals and petroleum are central to the DRC's economy, making up more than 95% of value of its exports.
Environmental policy in China is set by the National People's Congress and managed by the Ministry of Environmental Protection of the People's Republic of China. Under the Ministry of Environmental Protection of the People's Republic of China, the Department of Policies, Laws, and Regulations is in charge of establishing and strengthening basic laws and policies such as environmental laws, administrative policies and economical regulations. It is also responsible for the development of national environmental protection policy and macro strategy.
The health and environmental impact of the coal industry includes issues such as land use, waste management, water and air pollution, caused by the coal mining, processing and the use of its products. In addition to atmospheric pollution, coal burning produces hundreds of millions of tons of solid waste products annually, including fly ash, bottom ash, and flue-gas desulfurization sludge, that contain mercury, uranium, thorium, arsenic, and other heavy metals. Coal is the largest contributor to the human-made increase of carbon dioxide in Earth's atmosphere.
Environmental effects of mining can occur at local, regional, and global scales through direct and indirect mining practices. The effects can result in erosion, sinkholes, loss of biodiversity, or the contamination of soil, groundwater, and surface water by the chemicals emitted from mining processes. These processes also affect the atmosphere from the emissions of carbon which have an effect on the quality of human health and biodiversity. Some mining methods may have such significant environmental and public health effects that mining companies in some countries are required to follow strict environmental and rehabilitation codes to ensure that the mined area returns to its original state.
Mining in the United States has been active since the beginning of colonial times, but became a major industry in the 19th century with a number of new mineral discoveries causing a series of mining rushes. In 2015, the value of coal, metals, and industrial minerals mined in the United States was US $109.6 billion. 158,000 workers were directly employed by the mining industry.
An artisanal miner or small-scale miner (ASM) is a subsistence miner who is not officially employed by a mining company, but works independently, mining minerals using their own resources, usually by hand.
Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and industry, although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. Extensive industrialization and rapid urban growth exacerbated water pollution as a lack of regulation allowed for discharges of sewage, toxic chemicals, nutrients and other pollutants into surface water.
Coal mining in Brazil is the country's largest source of non-renewable energy, and is an important part of Brazil's energy economy. Brazil is the tenth largest energy consumer and the third largest in the Western Hemisphere. Coal accounts for approximately 5.8 percent of the country's total primary energy supply. It is the country's largest source of non-renewable energy, followed by nuclear energy, petroleum, and natural gas. Brazil produces about 6 million tons of coal per year, and total coal reserves are estimated at approximately 32.3 billion tons. It is also important in reducing reliance on imported oil and gas.
Legacy pollution or legacy pollutants are persistent materials in the environment that were created through a polluting industry or process that have polluting effects after the process has finished. Frequently these include persistent organic pollutants, heavy metals or other chemicals residual in the environment long after the industrial or extraction processes that produced them. Often these are chemicals produced by industry and polluted before there was widespread awareness of the toxic effects of the pollutants, and subsequently regulated or banned. Notable legacy pollutants include mercury, PCBs, Dioxins and other chemicals that are widespread health and environmental effects. Sites for legacy pollutants include mining sites, industrial parks, waterways contaminated by industry, and other dump sites.
