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  2. Salt mining - Wikipedia

    en.wikipedia.org/wiki/Salt_mining

    Diorama of an underground salt mine in Germany. Inside Salina Veche, in Slănic, Prahova, Romania.The railing (lower middle) gives the viewer an idea of scale. Before the advent of the modern internal combustion engine and earth-moving equipment, mining salt was one of the most expensive and dangerous of operations because of rapid dehydration caused by constant contact with the salt (both in ...

  3. Category:Mines in Tennessee - Wikipedia

    en.wikipedia.org/wiki/Category:Mines_in_Tennessee

    Pages in category "Mines in Tennessee" ... Ducktown Basin Museum and Burra Burra Mine This page was last edited on 23 August 2017, at 03:21 (UTC). ...

  4. Salt Cathedral of Zipaquirá - Wikipedia

    en.wikipedia.org/wiki/Salt_Cathedral_of_Zipaquirá

    Visitors can observe pieces of art, depictions of the mining process, geology displays, educational exhibitions about environmental friendly mining and sustainable development. The main places at the park are: The Sacred Axis, a square with a halite hand carved cross (4.2 metres (14 ft) height) The Salt Dome; The mine

  5. Hambach surface mine - Wikipedia

    en.wikipedia.org/wiki/Hambach_surface_mine

    Begun in 1978, the mine's operation area currently (as of end of 2017) has a size of 43.8 km 2, with the total area designated for mining having a size of 85 km 2. [4] It is the deepest open pit mine with respect to sea level : the bottom of the pit, with up to 500 metres (1,640 ft) from the surface, is 299 metres (981 ft) below sea level, [ 5 ...

  6. Lists of mines in the United States - Wikipedia

    en.wikipedia.org/wiki/Lists_of_mines_in_the...

    Mine: State: Coordinates: Town: Owner: Dates: Comments: Pyne Mine: Alabama 33°22′33.18″N 86°55′21.65″W Lacey's Chapel: Woodward Iron Company: 1918–1971 One of only two shaft mines dug in the Birmingham District, and the last ore mine to operate in the region, closing in 1971. Sloss Mines: Alabama 33.39816°N 86.93276°W Red Mountain

  7. Mineral industry of Europe - Wikipedia

    en.wikipedia.org/wiki/Mineral_industry_of_Europe

    Of all the global market mining of ore, eastern Europe was the smallest region accounting around just 1% of the market, the use of robots in the metal ore mining industry is improving the efficiency and productivity of mines and reduces operational costs. [33] The EU metallic mining sector produces a wide range of ores yielding metal substances ...

  8. Despite Google Maps notice, there is no date set for when I ...

    www.aol.com/despite-google-maps-notice-no...

    A Google Maps alert that says Interstate 40 at the Tennessee-North Carolina border will be closed until September 2025 is not the definitive date, Tennessee Department of Transportation spokesman ...

  9. Halite - Wikipedia

    en.wikipedia.org/wiki/Halite

    In these cases, halite is said to be behaving like a rheid. Unusual, purple, fibrous vein-filling halite is found in France and a few other localities. Halite crystals termed hopper crystals appear to be "skeletons" of the typical cubes, with the edges present and stairstep depressions on, or rather in, each crystal face. In a rapidly ...