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The repository is constantly seeking donations of mine maps to add to the microfilm/digital collection. [12] When maps are received from a donor, they are scanned and stored in both microfilm and digital archives. The maps, along with a scanned images (upon request), are returned to the donor. The repository does not retain hard copies of maps.
This is a list of mining areas in Colombia. [1] The mineral industry of Colombia is large and diverse; the country occupies the first place in mining areas per surface area in the world. In pre-Columbian times, mining of gold, silver, copper, emeralds, salt, coal and other minerals was already widespread.
Bagger 293 is 96 metres (315 feet) tall (the Guinness World Record for tallest terrestrial vehicle, shared with Bagger 288). It is 225 metres (738 feet) long (same as Bagger 287), weighs 14,200 tonnes (31.3 million pounds), and requires five people to operate.
Bagger 288 (Excavator 288), previously known as the MAN TAKRAF RB288 [2] built by the German company Krupp for the energy and mining firm Rheinbraun, is a bucket-wheel excavator or mobile strip mining machine. When its construction was completed in 1978, Bagger 288 superseded Big Muskie as the heaviest land vehicle in the world, at 13,500 tons. [3]
According to a 1904 dictionary of U.S. statutory language, "a mining district is a section of country usually designated by name and described or understood as being confined in certain boundaries, in which gold or silver or both are found in paying quantities, and which is worked therefor, under rules and regulations prescribed by the miners."
Map all coordinates using OpenStreetMap. Download coordinates as: KML; ... This is a partial list of current and defunct mines in Ashland. Name County Years Material ...
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 ...
The following list of mines in Serbia is subsidiary to the list of mines article and lists working, defunct and future mines in Serbia and is organised by the primary mineral output(s) and province. For a history of mining in the region now known as Serbia, see Vujic 2014.