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Abandoned mine shafts in Marl, Germany A plan-view schematic of a mine shaft showing cage and skip compartments. Services may be housed in either of the four open compartments. Shaft mining or shaft sinking is the action of excavating a mine shaft from the top down, where there is initially no access to the bottom. [1]
Shaft No. 2 with the old hoist house, c1906 Quincy Mine No. 2 Hoist House, 2006 Quincy Mine No. 2 Hoist House, 1978. The Quincy Mining Company was first organized in 1846, [4] and incorporated two years later, to mine the then-recently discovered Portage Lake copper formations. [2]
Schematic of underground mine ventilation The mine ventilation fan, before 1908. Underground mine ventilation provides a flow of air to the underground workers of a mine with sufficient volume to dilute and remove dust and noxious gases (typically NO x, SO 2, methane, CO 2 and CO) and to regulate temperature.
Hand crank for a winch on a sailboat - commonly referred to as a winch handle. A crank is an arm attached at a right angle to a rotating shaft by which circular motion is imparted to or received from the shaft.
The Magny shaft under construction, with the wooden headframe of the ventilation shaft and a second (temporary) chimney. Between 1856 and 1859, the Société civile des houillères de Ronchamp drilled the Pré de la Cloche borehole to the north of the future Magny shaft, revealing a layer 1.20 meters thick at a depth of 650 meters.
The pumping station at Cruquius, showing the beams of the pumping engine emerging from the supporting wall. A Cornish engine is a type of steam engine developed in Cornwall, England, mainly for pumping water from a mine.
The Bruce Mine Headframe is the headframe of a former underground mine in Chisholm, Minnesota, United States.It was built 1925–26 and operated until the mine closed in the early 1940s. [2]
No.2 generator has since been removed leaving No.3 as the only surviving early generator plant. No.3 plant comprising a General Electric alternator and turbine generator is coupled to a water-tube condenser unit (manufactured by Hick Hargreaves & Co Ltd., Bolton, England) situated beneath. The northern and southern sections of the powerhouse ...