Pleasley Colliery

Pleasley Colliery is a former English coal mine. It is located to the NW of Pleasley village which sits astride the River Meden on the Nottinghamshire/Derbyshire border.

History

Timeline

It was sunk in the 1870s and produced coal until 1983. By some miracle it escaped complete demolition after closure and it still retains its headstocks, engine-houses and steam winders, one of which was installed in 1904 by Lilleshall Co. Ltd. and the other in 1922 by Markham & Co. Ltd. Pleasley Colliery is now a Scheduled Ancient Monument and is in the process of being developed into a mining heritage site. The engine-house roofs and the chimney have been renovated and the winders are in the process of being restored by members of the Friends of Pleasley Pit preservation group.

The colliery is located to the NW of Pleasley village which sits astride the River Meden on the Nottinghamshire/Derbyshire border. It lies 3 miles (4.8km) north of Mansfield and 9 miles (14.5km) south of Chesterfield. From the south it commands a prominent position on the skyline, although less so now than when the winders were in operation and both chimney stacks were in place. The colliery is situated at about 500ft (152m) above sea level and is aligned on a NE-SW axis following the trend of the river valley at this point.

1872-1879

In 1872 a lease for the extraction of coal from the Top Hard seam, together with the construction and operation of a colliery, was granted to the Stanton Iron Company by William Edward Nightingale, the father of the famous Victorian nursing pioneer, Florence Nightingale. (Florence is reputed to have “turned the first sod” at the commencement of sinking). William (nee Shore) was lord of the manor of Pleasley, having bought the manor in 1823 for £38,000. He died in a tragic accident in 1874 and the manor passed to his son-in-law, Sir Harry Verney.

Work soon commenced on the surface infrastructure and by 1873 the two engine-houses had been constructed and sinking had commenced at both shafts. In the following year, the two main winders were installed by the Worsley Mesnes Iron Co. The sinking quickly ran into difficulties due to the high volumes of water encountered in the first 150 m., and this coincided with the onset of a serious depression in the iron and coal trade. Progress was halted and four large pumps were installed in the No. 1 shaft. Sinking was resumed in this shaft and the Top Hard seam was eventually reached in February 1877. The pumps were transferred to No. 2 shaft and sinking was resumed there. Later that year, in order to raise further capital, the Stanton Iron Co. decided to incorporate as a limited company and, early in 1878, 5752 shares were issued. The sinking headframes were removed and the main headstocks erected and by the end of the year, the fitting-out work above and below ground was approaching completion. When the Top Hard seam was finally reached in No. 2 shaft in February 1879 the Directors could report in March that the sinking had been completed and that production was ready to commence.

1881-1890

Although the depression in the coal trade continued for a number of years, output from Pleasley began to steadily increase, thanks to it’s freedom from serious geological problems. A 25ft. fault was soon encountered a short distance to the north-east but the workings to the north and west were fault free. In 1881 electric lighting for the coal face was installed by the electrical engineer R.E.B. Crompton. By October of that year the monthly output was about 9600 tons and by August the following year it had risen to 13,000 tons. Two years later, the figure for August stood at 17,250 tons, outstripping that of Stanton Iron Co.’s first colliery at Teversal which had been in operation since 1868.

In 1888, production had increased to such an extent that the main winding shaft had reached its maximum capacity. The upcast shaft was then fitted out for coal winding and output continued to climb. By 1890, with output averaging 1000 tons per day, the underground haulage of coal by ponies had become unsustainable and the first electrically driven underground rope-haulage system in the country was installed near the pit bottom. During the next seven years, a further four electrically driven rope haulages were installed, freeing up 44 horses and raising output to 1700 tons per day.

1899-1919

By 1899, despite encountering a second fault and a large washout to the south-west, output was such that the winding capacity had been reached at the upcast shaft and it was decided to install a more powerful winder and boilers whilst at the same time replacing the old wooden headstock which was now in a poor condition. This work was carried out in 1900, with all production temporarily shifted to the downcast shaft by means of two shift working. The following year, owing to the very poor condition of the old timber frame, the headstock at the downcast shaft was also replaced, although this time it was pre-erected on the pit-top and then winched into position.

Over the next two decades, many changes took place on the surface. In 1904 the drum shaft on the downcast shaft winder fractured and a new, more powerful winder was installed. Older boilers were replaced, more powerful fans were installed, new screening plant erected and turbine generators running off the exhaust steam from the winders were commissioned. Finally, in 1919, work commenced on deepening the upcast shaft.

1921-1938

In 1921 the deepening was completed and the opening-out of the Deep Hard seam begun. In order to wind from this seam a much larger winder was installed requiring the engine-house to be completely rebuilt to accommodate it. The steam plant was consolidated into a single range of boilers, and a new power-house containing a large mixed-pressure turbine generator was constructed.

Three districts in the 3ft thick Deep Hard seam were commenced, but the ensuing recession appears to have made it uneconomic and production ceased in 1927, all output then being concentrated on the Top Hard seam, the workings of which were now becoming quite extensive. By this time, most of the coal to the north of the river Meden had been worked out and production shifted to the reserves to the south. By the late 1930s, however, these reserves were diminishing, and exploratory investigation began of two underlying seams, the Dunsil and 1st Waterloo.

In 1938, 1,261 men were employed underground and a further 283 on the surface. Electric coal cutters had been in use since the early 1900s, but the coal was still being hand loaded, although now onto conveyor belts on the coal face rather than directly into tubs. The new seams were considerably thinner than the 5ft thick Top Hard and it was anticipated that a larger quantity of small coal would be created. In order to process this, a 150 ton per hour washery plant was constructed a few hundred yards to the south-west. This plant was to play a key role in subsequent years when mechanized loading was introduced and the demand for small coal for power generation soared.

1945-1951

After the war, the development of the Dunsil and 1st Waterloo seams accelerated and, once again, the Deep Hard seam was revisited. Manpower was in short supply, though. In 1945, although there were still 281 men on the surface, there were only 895 underground. Now, however, Huwood power loaders were being deployed on the coal face and the washery plant really began to earn its keep. 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. At this time, the Dunsil was being worked to the south-east of the shaft, whilst the 1st Waterloo workings were to the north-west. Meanwhile, in the Deep Hard seam, whilst redevelopment proceeded, production was focused on the north side.

1957-1983

In 1957 Pleasley saw the launch of a short enclosed tunnel carrying the trunk conveyor from the main intake airway through into a return airway close to the pit-bottom. With typical mining humour, it was christened Sputnik by the men. What its official name was has been long forgotten.

At about this time, cross-measure drifts were also being driven down to the underlying Piper seam to the south of the pit-bottom and a new face was headed out. This face advanced below the earlier workings in the Deep Hard until it had reached a position beyond their final working point. Near to the pit-bottom, the Piper seam was separated from the Deep Hard by about 10yds but as the face moved out, the distance decreased until they were separated by only a short distance. At this point short drifts were driven up into the Deep Hard and new faces were then opened out back in this seam and within a short distance they were working a combined thickness of coal of about 2 – 2.5 m. Two other faces had been opened out closer to the pit-bottom in the Piper, but no further development took place in that seam except for a parallel one running back towards the pit-bottom.

By this time, production had ceased both in the Dunsil and 1st Waterloo seams and in the Deep Hard north-side districts. All subsequent output now came from the combined Deep Hard / Piper workings to the south-east. Although the projected output was high, the surface infrastructure at Pleasley was now feeling its age, and with the sinking of a large surface drift and the construction of new coal processing plant at nearby Shirebrook colliery it was decided to switch all output to there. With the cessation of coal-winding at Pleasley, the colliery had breathed its last, but it received a sort of artificial respiration by being used for man-riding and materials until eventual closure in 1983.

1983-1995

Pleasley then suffered the further indignity of having the upcast shaft converted to supply air to Shirebrook’s workings for several years but this turned out to be a blessing in disguise. The work involved in filling the downcast shaft, together with the removal of the baths, washery, screens etc. all took time and gave the local authority the opportunity to have the remains given a preservation listing just before they were due for demolition in 1986. It then continued in a state of limbo for several more years until 1995 when the preservation group "Friends of Pleasley Pit" was formed and the restoration began.

References/notes

*Mansfield and North Notts Advertiser, Feb 1877 & Feb 1879
*Stanton Ironworks Co. Ltd archives, Derbyshire Records Office, Matlock, Derbyshire.
*Colliery Guardian 1891
*Transactions of Nottingham Mining Students 1923
*Colliery Engineering 1952
*National Coal Board. Pleasley Colliery, 1873-1973. (NCB, North Derbyshire Area, 1973).

External links

* [http://www.pleasley-colliery.org.uk/ Pleasley Colliery website]
* [http://www.derbyshireos.org.uk/Pleasley.html Pleasley Colliery Nature Reserve (with images)]
* [http://www.pitwork.net/pleasley.htm Pleasley Colliery - (Information from Colliery Engineering).]


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