Open questions: Clackmannanshire

Where sources disagree, MineArchive keeps both accounts rather than picking one; where a fact could not be settled, the record says so. 4 such claims on 2 records. All regions.

Alloa Colliery

• Local accounts of the company give Whinhall Pit No. 3 as started in 1902 and closed in 1919, and Jellyholm as started in 1887 and closed in 1921 when it became unprofitable. Neither date comes from the official returns, which show both pits still returning coal in 1920. (uncertain)
• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Alloa' (catalogue 11913, Coal Mosie, dated 1936); 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)

Devon Colliery

• Coal was worked on the Devon site from the eighteenth century, for around three hundred years in all. The pit opposite what is now Devon Village, associated with the Erskine family and their mining engineer Robert Bald, belongs to the early nineteenth century, and the colliery was later worked by the Alloa Coal Company. (uncertain)
• The mine stood idle from 1854 and was brought back by Andrew Roxburgh, then manager of the Alloa Coal Company, at well over the ten thousand pounds budgeted. The single account of it gives the idle period as 1854 to 1879 and Roxburgh's decision as 1873, which cannot both describe the same reopening; the decision and the resumption of winding may be the two dates. The work involved a 600-foot shaft, a pair of 24-inch winding engines with a twelve-foot drum and twelve-foot pulleys, ventilation by a thirty-foot fan moving 200,000 cubic feet a minute for three square miles of workings, and a branch railway to the Alloa docks. (uncertain)