service shaft

service shaft

[′sər·vəs ‚shaft]
(mining engineering)
A shaft used only for hoisting men and materials to and from underground.
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References in periodicals archive ?
The Sirius Mineral service shaft at Woodsmith Mine and, left, workers with the Stella Rose boring machine
The $3 billion project included the first new mine shaft built in Saskatchewan since 1979, a new mill, a new 500,000-mt storage facility, new rail and rail loadout equipment, and conversion of the existing service shaft, used for people and materials, to a second production shaft, for bringing ore out of the mine.
The dance music fan's body was discovered down a service shaft in Manchester on New Year's Day - 12 hours after he vanished from the city's Suede nightclub, where he was enjoying a night out with friends.
Eleven boring machines working from both sides of the Tunnel on the three tunnels: two 7.6m diameter tunnels for rail services, 30 m apart, with one 4.8m diameter service shaft between the two.
The blast in a service shaft caused some damage and brought train traffic temporarily to a halt.
Passengers of the shuttle suffered serious smoke inhalation and were evacuated via a service shaft. The fire at this stage appears to have been an accidental incident and investigations are continuing.
Special design features include the central service shaft which conceals pipes and cables; the multi-circuit mood lighting with switch panels in oak, chrome or brass; radiators, either concealed or traditional; oil-fired, pressurised, zoned central heating and hot water fed by an underground tank and advanced security and fire safety systems.
Shaft Sinkers is sinking a 9.9 m diameter concrete lined service shaft and a 7.4 m diameter concrete lined production shaft near the rim of the Palabora open pit, to depths of approximately 1,300 m.
The former was tasked with the design and drafting of the headgear, shaft collar and winder house for a new service shaft.
Shaft Sinkers is undertaking the sinking and equipping of the 1,291 m deep production shaft, mined to 8 m diameter and finished to 7.4 m, and the 1,275 m by 9.9 m finished diameter service shaft. Both are being sunk using Atlas Copco shaft jumbos, an eight-boom unit in the larger diameter service shaft and a seven-boom machine for the production shaft, and cactus grabs for mucking.
Visitors taking the 13-mile underground trip from the service shaft to the mining area find it easy to identify the various techniques used to drive main roadways over the four-and-a-half decades since the mine opened in 1968--early roadway cross sections are rectangular and rough-walled as a result of the drill-and-blast methods in use early on.

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