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The Mines of Spiennes cover some 100 ha (250 acres) of downland four miles south-east of the city of Mons. The site is dotted with millions of scraps of worked flint and numerous mining pits, that Neolithic settlers have gradually turned into vertical mine shafts to depths of over 10 m (33 ft). Underneath is an elaborate man-made network of ...
The Mountain Pass Rare Earth Mine and Processing Facility, owned by MP Materials, is an open-pit mine of rare-earth elements on the south flank of the Clark Mountain Range in California, 53 miles (85 km) southwest of Las Vegas, Nevada. In 2020 the mine supplied 15.8% of the world's rare-earth production.
Flint mining is the process of extracting flint from underground. Flint mines can be as simple as a pit on the surface or an area of quarrying, or it may refer to a series of shafts and tunnels used to extract flint. Flint has been mined since the Palaeolithic, but was most common during the Neolithic.
Spiennes (French pronunciation:; Walloon: Spiene) is a sub-municipality of the city of Mons located in the province of Hainaut, Wallonia, Belgium. It was a separate municipality until 1977. On 1 January 1977, it was merged into Mons. [1]
The historical Burro Schmidt Tunnel is located in the El Paso Mountains of the northern Mojave Desert, in eastern Kern County, southern California. It is a 0.5-mile (0.80 km) mining tunnel dug with hand tools and dynamite over a 38-year period by William "Burro" H. Schmidt (1871–1954). [2] in the El Paso Mountains of eastern California.
Grand-Hornu is an old industrial coal mining complex and company town (cité ouvrière) in Hornu , near Mons, in Belgium. It was built by Henri De Gorge between 1810 and 1830. It is a unique example of functional town-planning. Today it is owned by the province of Hainaut, which houses temporary exhibitions in the buildings.
Looking out the Hiller Tunnel near Malakoff Diggins. Visitors to the state historic park can hike on miles of trails. The mining pit is unfenced and accessible from the road and pathways that surround it. Hikers can enter the 556-foot-long (169 m) Hiller Tunnel, through which water for the mining operation once flowed.
The main period of the mines' exploitation was 2500-2000 BCE. [4] Flint mining at Krzemionki began to decline beginning in 1800-1600 BCE. [4] In following centuries, the Krzemionki mining district was only sporadically visited. The village near the mines was mentioned first historically in 1509 and was owned by a man named Jakub from ...