What is tailing AP environmental science?
Tailings, also called mine dumps, culm dumps, slimes, tails, refuse, leach residue or slickens,[1] are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore.
What are the impacts of mining apes?
Mining Waste For example, coal mining often destroys habitat and can contaminate ground and land water supplies. Coal mining produces a lot of dust and methane gas. There are many pollutants in the mine tailings including mercury, arsenic, and other heavy metals.
What does leaching mean apes?
Leaching. removal of dissolved material from the soil by water percolating downward. Illuviation. the deposition of leached material in the lower layers of soil.
What is surface mining apes?
surface mining. Removing soil, subsoil, and other strata and then extracting a mineral deposit found fairly close to Earth’s surface. overburden. The layer of soil and rock overlying a mineral deposit.
What’s the definition of tailings?
Definition of tailing 1 : residue separated in the preparation of various products (such as grain or ores) —usually used in plural. 2 : the part of a projecting stone or brick inserted in a wall.
What is urbanization apes?
Urbanization is an increase in the number of people living in cities and towns. With more people in cities and towns there are changes in the land use and economic development in the area.
What is ore apes?
ore. a rock that contains a large enough concentration of a particular mineral to be profitably mined and extracted.
What are the advantages and disadvantages of surface mining?
The pros of surface mining are that it has a lower financial cost and is a lot safer than underground mining because all mining operations take place above the surface. The cons are the hazards it presents to human health and the environment.
What is porosity apes?
Porosity is a measure of the total pore space in soil. (Porosity is actually highest in fine-textured soils such as clays. Although the pores in such soils are small, the total air space is higher.
What is a watershed apes?
watershed. a land area from which water, sediment, and dissolved materials drain to a common point along a wetland, stream, lake, or river.
What are apes reserves?
reserves. Resources that have been identified and from which a usable mineral can be extracted profitably at present prices with current mining technology.
What is tailing in molecular biology?
Tailing is an enzymatic method for adding a non-templated nucleotide to the 3′ end of a blunt, double-stranded DNA molecule. Tailing is typically done to prepare a T-vector for use in TA cloning or to A-tail a PCR product produced by a high-fidelity polymerase (not Taq) for use in TA cloning.
What are tailings heaps?
The tailings heaps stretch across this image. Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction ( gangue) of an ore.
How do tailings affect the environment?
Thus, tailings have the potential to damage the environment. Therefore, proper disposal of tailings should be a major concern of those involved in the mining and processing industries in order to prevent or control environmental damage caused by tailings and other corrosive elements.
What is the difference between term and tailings?
Term that applies to material that is produced as a by-product of a site work process, or other type of construction operation. The process involved, could be the crushing of stone or concrete, or the scalping of the same product. Tailings are the miscellaneous products or spoils, that are left over, once the intended product is produced.
When are tailings not worth the effort?
At some point in the process, depending on the needs of the project as well as the economics involved, the tailings will not be worth the financial effort to continue to process. At this point the tailings are normally not used for any specific applications, but can be used as a general fill material.
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