WebJun 5, 2024 · At that point, taconite mines had been running for years, and Minnesota believed the waste material—tailings—couldn’t hurt the environment. The state approved … WebPreserve and protect Lake Superior from air and water pollution Continue to oppose stocking of exotic game fish in Lake Superior Support zero discharge of persistent toxic …
Newspapers - Taconite Mining: Technology, Taxes, & Tailings
WebOne of the most famous examples of poor disposal practices, and the resulting expenses, is the case of Reserve Mining Company dumping taconite tailings into Lake Superior. From 1955 to 1980, the company poured their tailings into Lake Superior, at a rate of as much as 67,000 tons per day. WebVerna Grahek Mize (April 25, 1913 – January 1, 2013) was an American environmental activist. From 1967 to 1980, she led a campaign to prevent a mining company from … rocks and minerals kit scholastic
Mineland reclamation and mine water treatment Minnesota DNR
WebJul 23, 2013 · The man who led Reserve Mining Co.'s handling of a federal environmental lawsuit over the disposal of taconite tailings into Lake Superior has died. Matthew R. Banovetz, who served as company ... WebMar 22, 2024 · Mize followed in their footsteps and brought samples of water that contained taconite tailings. ... Mize’s commitment to Lake Superior made changes in the governance of one of the world’s most vital freshwater resources. Mize passed away in 2013, but is remembered locally through her park, the triathlon and in the deep clean blue of Lake ... Beginning in 1955, Reserve Mining Company discharged crushed waste rock (tailings) from their Silver Bay, Minnesota processing plant into Lake Superior. The tailings contained 40% of the amphibole group mineral series cummingtonite-grunerite, which may form asbestiform particles. A small fraction … See more Taconite is a variety of iron formation, an iron-bearing (over 15% iron) sedimentary rock, in which the iron minerals are interlayered with quartz, chert, or carbonate. The name "taconyte" was coined by Horace Vaughn … See more To process taconite, the ore is ground into a fine powder, the magnetite is separated from the gangue by strong magnets, and the powdered iron concentrate is combined with a binder such as bentonite clay and limestone as a flux. As a last step, it is rolled into … See more • Davis, Edward W., Pioneering With Taconite. St. Paul: Minnesota Historical Society Press, 1964. • Erie Mining Company History Project Team, Taconite, New Life for Minnesota's Iron Range: The History of Erie Mining Company. Duluth: St. Louis County Historical … See more In the late 19th and early 20th centuries, the United States was mining such an abundance of iron ore of high quality that taconite was considered an uneconomic waste product. By … See more • Edward Wilson Davis – American engineer and inventor pioneering early research in taconite • Banded iron formation – Distinctive layered units of iron-rich sedimentary rock … See more • "Taconite", Minnesota Department of Natural Resources • "Mesabi Iron Ore Range", Geography • "History of Silver Bay", Silver Bay, Minnesota Official Website See more rocks and minerals in washington state