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Cefn Coed Colliery Coal Mine (United Kingdom)
Cefn Coed Colliery was opened as an anthracite colliery by the Llwynonn Colliery Company during the 1920s. Three attempts were unsuccessfully made to sink shafts at Cefn Coed, but it was not until the Llwynonn Colliery company was bought out by the Amalgamated Anthracite Combine of Ammanford in 1926 and high capital investment made, that a break was made in the hard Blue Pennant sandstone. The first coal raised in 1930, with the shaft and workings powered by a steam engine, fueled by the gas form the old workings.
Like much of western South Wales coalfield, the coal was high quality anthracite. The best coal came from the deepest seam called Big Vein, broken into at a depth of 750 yards. Cefn Coed during its working life at depths of over 2,500 feet (800m), was the deepest anthracite mine in the world. Other shafts worked at Cefn Coed included: Peacock, White Four Feet and the Nine Feet. Brammallite was identified in the Dulais seam, by X-ray diffraction by the Natural History Museum, London; making Cefn Coed one of only two sites in all of Wales for Brammallite. However, at such depths and with frequent mining accidents due to methane gas and roof falls, the pit and it soon gained the unenviable nickname of "The Slaughterhouse."
By the end of World War II in 1945 there were 908 men employed. Nationalised by the National Coal Board, continual investment was required to combat the need to keep roadways open at the extreme depths. Changing economics lead to a reduction in the workforce from the 1950s, and the mine ceased production in 1968.
A majority of the men were transferred to the new Blaenant drift mine, built to extract coal form the No.2 Rhondda seam at a shallower depth. One of the two shafts at Cefn Coed was used to ventilate Blaenant, and as an emergency exit, until the closure of Blaenant in 1990.
As a Museum
The complete above ground mine workings remain intact on site, with the steam winding engine from No.2 shaft now electrically driven.
Manufactured in 1927, the Worsley Mesne steam winding engine sits in the boiler house with its suite of six Lancashire steam boilers. The engine has two cylinders with a bore of 32 inches, while the drum is 10ft wide. The drum held two ropes each over 800 yards long, with a breaking strain of 234 tons. The ropes were inspected everyday, weight tested every three months and replaced completely every 2½ years. Every six months they were shortened by about 6 feet in order to eliminate wear and stress at the end of the rope.
There is no access to the underground workings within the museum, but a simulated gallery provides full accessibility for blind and disabled visitors. As well as artefacts from the mining industry, the museum also houses a restored and unique gas tram, which ran in Neath until 1920.
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Last modified 10/09/2009 03:11:28 by Dai the Pitman.Google Earth Map of Cefn Coed Colliery Coal Mine
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Blaenant Coal Mine
Blaenant Old Coal Mine
Cefn Coed Coal Mine
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