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Gypsum pits in the Vale
This map from 1883 shows gypsum pits close to houses in Orston. They have all been filled in. Plaster for building is made from a mineral usually called 'gypsum' although better-quality gypsum is described as 'alabaster'. Before modern fertilizers it was also used to 'marl' fields. The sticks of 'chalk' used in classrooms are actually processed gypsum.
Gypsum is a soft mineral composed of calcium sulphate dihydrate.
Historical records of gypsum extraction refer to 'marl pits', 'plaster pits', 'alabaster quarries' and 'gypsum mines'. 'Pits' and 'quarries' and 'mines' denote different ways of extraction. But what was being extracted was essentially the same – other than marl being poor-quality gypsum and alabaster being high-quality. Evidence for the working of gypsum in the Vale dates back to 1252 when plaster was supplied to Nottingham Castle, perhaps for flooring. Michael Honeybone in his 1987 book The Vale of Belvoir stated that
Throughout the time gypsum was being extracted in Orston several major improvements were made to the church, including rebuilding the tower in 1766. Furthermore a lavish rectory (now Orston Hall) was built in the late seventeenth century and refronted in the mid-eighteenth century. The current Churchwarden, Julian Humpheson, has started a research project attempting to link these improvements with wealth generated from gypsum extraction in the parish. In the 1860s a plaster pit was opened up south of Orston at the side of the railway (see map below) by Messrs Willis of London, which later became the 'Vale of Belvoir, Newark and Orston Plaster Company'. This became a mine later in the nineteenth century. But mining proved to be too expensive and the site became a brickworks. In 1991 Paul Barnes and Ron Firmin published a detailed history.
Gypsum for plaster was quarried at Orston and appears to have been a valuable source of income.
As far as can be established gypsum extraction at Burton on the Wolds, Leicestershire, was ending at the same time Orston's output was increasing around the 1860s. Relevant parish registers seem not to have survived so I am not able to confirm that quarrymen and their families moved from Burton to Orston. The OS maps of 1883 show two gypsum and brick works near Hawton and another near Shelton. But the major source of gypsum in the Vale was from Orston. The next-biggest gypsum quarry in the Vale was at the side of the canal at Cropwell Bishop. The buildings at Cropwell Bishop have been restored in recent decades.
'Orston Works (disused)' in 1915. The site subsequently became a Girl Guide camp. The pits have flooded and become SSSI nature reserves. To the north of Orston exceptionally low iron-content gypsum was extracted in recent decades from large pits at Kilvington. Those pits have been worked out and are now flooded. Extraction of the same quality of gypsum is currently taking place to the south of Newark. This gypsum is used for plaster of Paris and various speciality applications in industry and medicine. An article on the Wolds Historical Organisation's web site provides a brief history of gypsum and alabaster extraction. More about the former 'alabaster pits' of Burton on the Wolds.
sourcesPeter Allen and Anthony Cooper, 2016, 'The use of gypsum plaster and lime-ash for flooring in medieval east Midlands: evidence from Bingham, Nottinghamshire', Transactions of the Thoroton Society of Nottinghamshire, Volume 120.Paul Barnes and Ron Firman, 1991, 'Gypsum working in the parish of Orston', Bulletin of the Peak District Mines Historical Society Vol.11 No.4; available online here: web.archive.org/web/20120506173215/http://www.pdmhs.com/PDFs/ScannedBulletinArticles/Bulletin%2011-4%20-%20Gypsum%20Working%20in%20the%20Parish%20of%20Orston,%20Not.pdf
Michael Honeybone, 1987, The Vale of Belvoir, Barracuda Books.
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