How to use upcast pit in a sentence? Find typical usage patterns (collocations)/phrases/context for "upcast pit" and check conjugation/comparative form for "upcast pit". Mastering all the usages of "upcast pit" from sentence examples published by news publications.
About 5 tons of coal were burnt per day in two out of three grates, each by . Air for the ell coal was drawn down pit number 1. At the base it split north and south then after passing around the respective parts of the workings it was led to the upcast pit.
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On 24 December 1813 at 01:30 the colliery again exploded, this time with the loss of 9 men and 13 boys along with 12 horses. All the dead were in the headways by William Pit (the upcast pit). Those in the boards away from William Pit were saved. The reported the supposition that "the hydrogen took fire at the crane lamp, in the south headways".
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The firemen assured the workers all was well and ascended to sign reports and have breakfast. Having received these assurances the workforce went about their various tasks. At around 09:00 a blast was heard on the surface and flame and steam rushed up number 3 pit for a few minutes. Smoke was seen from the upcast pit and air came from number 2.
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In collieries at that time air circulation was induced by a furnace at the base of the upcast pit. Hot air rising up the pit, as if up a chimney, drew the exhausted and contaminated air out of the galleries. Downcast pits let the fresh air in to replace it. The route the air took was carefully controlled by doors and partitions. At Blantyre pit, number 5 was the upcast shaft for pits 1, 2 and 3.
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The Lamp pit was the upcast pit, that is the one up which the air passes. At the time of both disasters the ventilation was by induced draft provided by 30 (later 35) foot diameter fan. Coal was drawn up the Busty shaft from the Busty and Hutton seams in 1882. By 1909 only the Busty level was serviced directly: coal was lowered down a staple from the Towneley and down a drift from the Tilley.
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Air was drawn down number 2 and split in two. The larger portion went north, circulated around the north-west workings for before returning to the upcast pit. The smaller part was led to the south, circulated around the south-western area for and then back to the upcast. The air from number 3 pit entered the workings associated with number 2 pit in the east and circulated around number 2 pit's south-eastern portion before finally reaching the upcast.
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In the late 1940s, following nationalisation, a major development program was begun. Tubs were replaced by 3 ton mine-cars and on the surface, compact circuits were constructed, with fully automatic pneumatic systems controlling their movement and emptying. At the downcast shaft, a complete new pit-bottom and mine-car haulage system was constructed in the deeper 2nd Waterloo seam, with the shaft itself being deepened by driving up from below, whilst in the upcast pit-bottom, a compact mine-car circuit was constructed, with the coal now being transported almost to the shaft-side by powerful trunk conveyor belts. In 1951, the last face in the Top Hard seam finished, more than three miles traveling distance south of the pit bottom, but the main output from the downcast shaft had already moved to the Dunsil and 1st Waterloo seams.
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