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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.
Techniques of surface mining include: open-pit mining, which is the recovery of materials from an open pit in the ground; quarrying, identical to open-pit mining except that it refers to sand, stone and clay; strip mining, which consists of stripping surface layers off to reveal ore underneath; and mountaintop removal, commonly associated with ...
The primary sector of the economy includes any industry involved in the extraction and production of raw materials, such as farming, logging, fishing, forestry and mining. [ 1 ] [ 2 ] [ 3 ] The primary sector tends to make up a larger portion of the economy in developing countries than it does in developed countries .
The major slate mining region in the United Kingdom is the Lake district, with Honister slate mine being the last working slate mine, the only producers of the world famous Westmorland greenslate. In the remainder of Continental Europe and the Americas , Portugal , Italy , Germany , Brazil , the east coast of Newfoundland , the Slate Valley of ...
Yellow goods are material for construction and earth-moving equipment, quarrying equipment, and fork-lift trucks. [1] The term is also used to encompass agricultural equipment, such as tractors. The term "yellow goods" originated from the distinctive yellow colour commonly used on these types of machinery. [2]
Artisanal mining can include activities as simple as panning for gold in rivers, to as complex as development of underground workings and small-scale processing plants. . Miners use a variety of methods to locate minerals, including historical knowledge, the observation of other minerals or rocks, or technology such as mineral detectors and audio-based reflection seismology surve
Mining can provide various advantages to societies, yet it can also spark conflicts, particularly regarding land use both above and below the surface. [2] Mining operations remain rigorous and intrusive, often resulting in significant environmental impacts on local ecosystems and broader implications for planetary environmental health. [3]
Recently constructed wetland regeneration in Australia, on a site previously used for agriculture Regenerated habitat for the superb parrot on the abandoned Boorowa railway line Land rehabilitation as a part of environmental remediation is the process of returning the land in a given area to some degree of its former state, after some process ...