| Wheldale Colliery | |
| Pushpin Map: | West Yorkshire |
| Place: | Castleford |
| Subdivision Type: | County |
| State/Province: | West Yorkshire |
| Country: | England |
| Products: | Coal |
| Financial Year: | 1949 |
| Opening Year: | 1868 |
| Closing Year: | 1987 |
Wheldale Colliery was a coal mine located in Castleford, Yorkshire, England[1] which produced coal for 117 years. It was accessed from Wheldon Road.
After closure, the site was used to gather coal-bed methane for conversion into electricity.
The colliery was founded in 1868 when two shafts, both 13feet in diameter, were sunk to the Beeston coal seam at a depth of . Production started in 1870. One of the main investors was a Dr Holt, and so for many years the colliery was known as the "doctor's pit".
In 1891 a fire in the colliery caused the death of five miners.[2]
In 1899, on the 22 June one boy, Hodgson, aged 16 died, and another, Gregg, aged 15, was injured in an incident. The Wheldale coal company and Fryston coal company amalgamated. In 1919 Wheldale coal company amalgamated with Allerton Bywater colliery to form Airedale Collieries LTD.
About 1000 men and boys worked in the mine, producing about of coal each year. This was reduced in 1902 and 1903 because there was a long miner's strike.[3]
On 22 February 1923, nine men were killed in an underground explosion. One was killed outright; the further eight dying from severe burns later.[4]
Because Wheldale had no coal washing plant, in the 1930s a mineral line was laid from Wheldale to Fryston, and coal that required washing was sent to Fryston colliery.
In 1947 the Wheldale colliery was nationalised, and in 1949 major improvements were made: The colliery was completely electrified. Two skips were installed in the downcast shaft, each with a capacity of six tonnes, allowing production of 350 tonnes per hour. The Downcast shaft had an electric winder which had two motors. The upcast shaft, which was for men and materials, had two single deck cages, each of which could hold two tubs. The winder had a motor. Conveyor belts were installed; Wheldale then had the longest single conveyor belt in the world, about one mile in length. Gate roads were 30-inch belts, trunk conveyors were 36 inches in width. The Flockton seam had two bunkers, a pit bottom bunker of 250 tonnes capacity and an inbye bunker of 200 tonnes. Dirt from repairs in the return gates was transported to the pit bottom in tubs. Diesel locomotives carried men and material about the mine.
By this time the shafts at Wheldale had six insets: Warren House seam at 183m (600feet), Haigh Moor seam at 258m (846feet), Flockton Thick seam at 346m (1,135feet), Middleton Little seam at 400m (1,300feet), Silkstone seam at 436m (1,430feet) m and Beeston seam at 516m (1,693feet).
Coal was mined using AFC mounted trepanners. There was no coal preparation plant at the colliery, so while coal smaller than one inch could be sent directly to Glasshoughton Coking plant or by barge to Ferrybridge power station, coal larger than one inch was sent by locomotive to Fryston colliery for treatment.[5] At this time Wheldale's six hundred miners produced on average of coal per year. In 1949, this was registered as being .[6]
In 1950 there was another miners' strike at the colliery.[7]
In 1972 Wheldale was the last colliery in Yorkshire to use pit ponies. Fryston colliery closed in 1985, and a barrel washer was set up to clean coal at Wheldale.
In 1982 Wheldale produced a record-breaking output of . That year it was the last colliery in the UK to use a steam locomotive on its sidings. In 1985 there was once more a strike of the coal miners.[8]
Wheldale colliery closed in October 1987. Equipment was salvaged, and then the site was then cleared, but the shafts were not filled.
A methane capture plant was built to convert the methane gas from the old workings into electricity. This power station generates 10MW of power and provides electricity for about 8,000 homes.[9] [10]
At the time of closure, each shaft had a concrete landing between the Flockton and Middleton little seam insets. These landings needed to be removed because they were exuding low atmospheric pressure explosive quantities of methane gas, which was escaping from the old lower workings. The landings were removed with a Jetknife 2000 high-pressure water system with abrasive particles in the water. This was carried out using a robot-controlled machine while supervised by the engineers in the colliery offices via CCTV.
The site was eventually restored to its original woodland, grassland and wetland state, with bridle and footpaths for recreational use.[11]