Open questions: Leicestershire

Where sources disagree, MineArchive keeps both accounts rather than picking one; where a fact could not be settled, the record says so. 13 such claims on 10 records. All regions.

Bagworth Colliery

• Wikipedia records that the then Viscount Maynard had the first shaft of Bagworth Colliery sunk in 1828, with the coal at first carried to Leicester by road; the Northern Mine Research Society dates the instigation of the sinking by Maynard to 1826. (disputed)
• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Bagworth' (catalogue EM836, Lower Main, dated 1964); 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)

Califat Coal Mine

• There are two engine house complexes at the Califat mine, the easterly one named Alabama, believed to be named after the CSS Alabama which sank or captured sixty-four United States merchantmen during the American Civil War. (uncertain)
• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Califat' (catalogue EM1233, Main (Upper Main), dated 1869); 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)

Croft Granite Quarry

• Local tradition holds the site was worked as a Roman quarry in the 1st century AD for road and bridge foundations, though scholarship does not support it. (uncertain)

Desford Colliery

• In the 1950s Matthew Smith, the undermanager at Desford Colliery, invented the Desford Chock, described as the first ever hydraulic powered roof support; Sam McKee, the mine agent, developed it further, and three prototypes were tried using the colliery fire hydrant to supply the water pressure. (uncertain)

Donisthorpe Colliery

• I.A. Recordings, whose crew were on site that day, record the colliery as officially due to close at twelve noon on 12 April 1990; the Wikipedia article on the village gives the closure as 1991. (disputed)

Longcliffe Quarry

• The quarry was run by ARC and later Hanson Aggregates/Midland Quarry Products, per sources no more recent than around 2011; current operatorship is not confirmed. (uncertain)

Mountsorrel Quarry

• Roman-era activity is traditionally associated with the site: a villa reputedly stood on Broad Hill, and 19th-century quarrying there uncovered artefacts including a preserved wooden bucket. (uncertain)

Nailstone Colliery

• J. J. Ellis owned the colliery in 1866 and sold out in 1875; it closed in 1876, was working again under new ownership by 1883, and was taken over by the Nailstone Colliery Company when that owner died in 1887. Whether Ellis originated the colliery is not certainly known. (uncertain)
• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Nailstone' (catalogue EM903, Upper Main, dated 1940); 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)

New Lount Colliery

• Pithead baths were built in 1930, apparently the first at any Leicestershire colliery. (uncertain)

South Leicester Colliery

• The Northern Mine Research Society dates the start of sinking to January 1876; an account of Ellistown village instead says the South Leicestershire Coal Company opened its colliery in 1874, north-east of the crossroads. (disputed)