Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique that extracts rock or minerals from the earth.
Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin. In contrast, deeper mineral deposits can be reached using underground mining.
Natural resources are resources that are drawn from nature and used with few modifications. This includes the sources of valued characteristics such as commercial and industrial use, aesthetic value, scientific interest, and cultural value. On Earth, it includes sunlight, atmosphere, water, land, all minerals along with all vegetation, and wildlife.
Natural resources are part of humanity's natural heritage or protected in nature reserves. Particular areas (such as the rainforest in Fatu-Hiva) often feature biodiversity and geodiversity in their ecosystems. Natural resources may be classified in different ways. Natural resources are materials and components (something that can be used) found within the environment. Every man-made product is composed of natural resources (at its fundamental level).
Extractivism is the removal of natural resources particularly for export with minimal processing. This economic model is common throughout the Global South and the Arctic region, but also happens in some sacrifice zones in the Global North in European extractivism. The concept was coined in Portuguese as "extractivismo" in 1996 to describe the for-profit exploitation of forest resources in Brazil.
Many actors are involved in the process of extractivism. These mainly include transnational corporations (TNCs) as the main players, but are not limited to them, because they also include the government and some (chiefly economic) community members. Trends have demonstrated that countries do not often extract their own resources; extraction is often led from abroad. Extractivism is controversial because it exists at the intersection where economic growth and environmental protection meet. This intersection is known as the green economy. Extractivism has evolved in the wake of neo-liberal economic transitions to become a potential avenue for development to occur. This development occurs through stabilizing growth rates and increasing direct foreign investment.
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. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a "pit", and above-ground mining structures are referred to as a "pit head". In Australia, "colliery" generally refers to an underground coal mine.
Coal mining has had many developments in recent years, from the early days of tunneling, digging, and manually extracting the coal on carts to large open-cut and longwall mines. Mining at this scale requires the use of draglines, trucks, conveyors, hydraulic jacks, and shearers.
A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact.
The word quarry can also include the underground quarrying for stone, such as Bath stone.
The Udachnaya pipe (Russian: Уда́чная, IPA: [ʊˈdat͡ɕnəɪ̯ə]; lit. 'Lucky') is a diamond deposit in the Daldyn-Alakit kimberlite field in Sakha Republic, Russia. It is an open-pit mine, and is located just outside the Arctic Circle at 66°26′N 112°19′E / 66.433°N 112.317°E.