Open questions: Nottinghamshire

Where sources disagree, MineArchive keeps both accounts rather than picking one; where a fact could not be settled, the record says so. 30 such claims on 17 records. All regions.

Annesley Colliery

• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Annesley' (catalogue EM1211, Deep Soft, dated 1983); the catalogue gives no location and the plan's details do not clearly tie it to this working, so it may belong to another of the same name. (uncertain)

Awsworth Colliery

• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Awsworth' (catalogue 3924, Furnace Or Tupton, Three Quarters Or Tupton Three Quarters, Blackshale Or Silkstone & Kilburn, dated 1899); the catalogue gives no location and the plan's details do not clearly tie it to this working, so it may belong to another of the same name. (uncertain)

Broxtowe Colliery

• Mining Remediation Authority abandonment plans titled 'Broxtowe' are dated 1904 (Deep Hard), 1919 (Top Hard, catalogue 6897) and 1949 (Deep Hard), and Babbington's 1971 plan includes workings from Broxtowe; none is dated to the recorded 1929 closure. (uncertain)

Calverton Colliery

• Calverton was officially opened on 24 September 1952 by Lord Leathers, the first new colliery opened by the National Coal Board; coal winding began in March 1953. (disputed)
• The colliery was officially opened in 1950 as the first new colliery of the National Coal Board. (disputed)
• The shafts were 576 yards (527 m) and 562 yards (514 m) deep. (disputed)
• The first (downcast) shaft, 5.5 m in diameter, was 378.5 m (1,241 ft) deep. (disputed)
• Calverton colliery closed in 1995 and the site was cleared. (disputed)
• Production commenced in 1948. (uncertain)

Cossall Colliery

• The Historic Environment Record gives the colliery as opened in 1870 and closed in 1966. (disputed)
• The parish's own history says the colliery was sunk in 1878-79 by the Cossall Colliery Co., while the Lists of Mines record it worked from 1871 and the register of deaths at the pit and its earlier workings begins in 1868. (disputed)

Cotgrave Colliery

• On closure it was reported that the seams held millions of tons of reserves but of insufficient quality. Local residents instead recount geological faults, the encounter of a subterranean stream and subsequent flooding, and the growing distance of the seam face from the shaft, which drastically increased the cost of bringing coal to the surface. (disputed)

Digby Colliery

• One published brickworks history gives the colliery's closure as 1928, which is contradicted by the 1933 Year Book listing and a fatality at the pit in March 1934. (disputed)
• The colliery closed in 1937, the year the company's New London Colliery shut; a widely repeated date of 5 November 1937 is not recorded to a readable source. (uncertain)
• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Digby' (catalogue 10011, Tupton, dated 1930); the catalogue gives no location and the plan's details do not clearly tie it to this working, so it may belong to another of the same name. (uncertain)

Gedling Colliery

• Sources give slightly different depths for the main seams: Gedling Borough Council's own history states 428 m (1,404 ft) to the Top Hard seam, while a separate account gives the High Hazels seam at 368 yards (337 m) and the Top Hard seam at 458 yards (419 m). (disputed)

Linby Colliery

• Sources disagree on when Linby began work: the Durham Mining Museum gives a sinking in the late 1860s, the Nottinghamshire Historic Environment Record an opening in 1875, and the memorial plaque on the site 1873. (disputed)

Manton Colliery

• A 226-metre manway tunnel runs under the colliery's former waste tips west of the site. Its construction is undocumented but falls between 1953 and 1958 on the Ordnance Survey map series, and a visit in July 2026 found it intact, with original light fittings, a refuge and a side room. (uncertain)

Shireoaks Colliery

• The colliery closed in May 1990, a month after joining the South Yorkshire Group; one source instead gives 25 May 1991. (disputed)

Strelley Colliery

• The scheduling text records the colliery as productive at least into the later seventeenth century. (disputed)
• The account of the wagonway has the Strelley mines worked only until about 1620, by which time all readily recoverable coal had probably been mined, the wagonway being abandoned with them. (disputed)

Sutton Colliery

• The shafts were sunk in 1874 by the Stanton Iron and Coal Company. (disputed)
• It was opened by the Skegby Colliery, Lime and Brick Company. (disputed)

Teversal Colliery

• Teversal was the first colliery sunk by the Stanton Ironworks Company, the shaft begun in the Butcherwood ground; the Durham Mining Museum gives the sinking as started in 1868 and Discover Ashfield gives 1867. (disputed)
• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Teversal' (catalogue EM1148, First Waterloo, dated 1980); the catalogue gives no location and the plan's details do not clearly tie it to this working, so it may belong to another of the same name. (uncertain)

Underwood Colliery

• Three dates are given and no source reconciles them. Healey Hero has Barber Walker taking the Selston or Underwood working over in 1728, when it was probably outcrop or opencast, and sinking a vertical shaft in 1831. The Durham Mining Museum gives the colliery as opened in 1855. Mining Heritage puts the sinking of Selston, in brackets Underwood, at 1875, among the new pits of the 1860s and 1870s. The 1842 Children's Employment Commission covered a 140-yard shaft here, which rules out both 1855 and 1875 as the start of working on this ground. (disputed)

Welbeck Colliery

• UK Coal earmarked the pit for closure in 2005; at the end, of 410 miners, 70 remained to recover equipment, 120 transferred to other pits and 60 left the industry. (disputed)

Wollaton Colliery

• Wollaton Colliery discharged water from its bathhouse into the Nottingham Canal until its closure in late 1963. (disputed)
• healeyhero's register of deaths at the pit covers 1873 to 1966, implying working into the mid-1960s. (disputed)
• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Wollaton' (catalogue EM1265OC, Coombe, dated 1985); the catalogue gives no location and the plan's details do not clearly tie it to this working, so it may belong to another of the same name. (uncertain)