Underground Mining Operations

Images depict various underground tunnels and excavation sites, showcasing machinery and lighting in a rugged, earthy environment.

emerald mine - drilling for blasting underground s.w. vein, regal ridge, yukon territory, canada

Maj. Gen. Heitkamp tours the new control tower which, when completely constructed, will enable lock operators to control lock operations remotely. On July 15, Deputy Commanding General Heitkamp visited the Pittsburgh District to tour the construction work at Charleroi Locks and Dam 4 in Belle Vernon, PA. The construction work is part of the Lower Monongahela River project, which will replace the nearly 100-year-old fixed-crest dam with a gated dam at Braddock Locks and Dam 2, remove Locks and Dam 3 in Elizabeth and construct two larger locks at Charleroi Locks and Dam 4 in Belle Vernon. The Braddock, Elizabeth and Charleroi locks are the three oldest operating-navigation facilities on the Monongahela River and experience the highest commercial-traffic volume in the entire Monongahela River Navigation System.

Salzzwerge am Boden des Kunegunda-Schachts im Salzbergwerk Wieliczka Kopalni Soli Wieliczka in Wieliczka in Kleinpolen in Polen *** Salt dwarfs on Floor of Kunegunda Shaft at Salt mine WIELICZKA Kopalni Solos WIELICZKA in WIELICZKA in Little Poland in Poland

Cleaning of a collector in the sewers of Paris France

Wheel room of the Unverhofft Segen Gottes Erbstolln in Oberschöna, where there is a 13 metre high and 2.5 metre wide vault, in which a water wheel was operated in the 18th century, which kept the pumps running at a depth of 70 metres, 19th Day of the Mining and Metallurgy Exhibition in the District of Central Saxony, Oberschöna, Saxony, Germany, Europe

In the bunker, forest settlement, Mamerki, Wegorzewo, Warmia-Masuria, Wall Forest, Angerburg, Warminsko-Mazurskie, Poland, Europe

Construction workers silhouette

Salt mine, Pride, Sovata, Mures County, Romania, Europe

Mettenschicht in the Ehrenfriedersdorf tin mine

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