Probably Kenicott Copper - Bingham Canyon - Salt Lake City, UT
The New Cornelia Tailings Dam is cited as one of the world's largest dams. It was not constructed but rather formed from the waste rock (tailings) from the local mine. It was closed in 1983.
Merriespruit tailings dam disaster happened in 1994.
B. H. Conlin has written: 'Background information on stability of tailings dam and related structures' -- subject(s): Stability, Waste disposal, Tailings (Metallurgy), Mineral industries, Tailings embankments, Tailings dams
Tailings Processing is our operations division which provides a chemical free, environmentally friendly solution to the process of extracting minerals from tailings. Their technique also reduces the negative environmental effect of the chemicals remaining in the tailings from the original mining process.
In mining, tailings are the unwanted byproduct that affects the environment. But with the separation process called GravSep, acid forming mineral content of the tailings is reduced. The result: cleaner tailings. Mining usually produces byproducts, called tailings, that are harmful to the environment. But with the physical separation process, which is GravSep, harmful substances in the tailings are significantly reduced.
J.L Verrette has written: 'Design of a model spillway for tailings operations in Northern regions' -- subject(s): Spillways, Tailings (Metallurgy), Design and construction, Tailings dams
Tailings
Tailings are the dirt left after sifting out the gold, so they look like piles of dirt.
The waste material left after a mineral has been extracted is called tailings. Tailings are the byproduct of the mining process, and they often contain leftover minerals, water, and other materials that were not extracted during mining. Proper disposal and management of tailings are crucial to minimize environmental impacts.
Arizona, US
A waste product from iron ore processing is tailings, which are fine-grained materials left over after the extraction of iron from the ore. Tailings are typically stored in tailings ponds or disposed of in other ways to prevent environmental contamination.
The New Cornelia Tailings dam in Arizona was constructed in the late 1930s as a part of the mining operations in the area.