Open questions: East Dunbartonshire

Where sources disagree, MineArchive keeps both accounts rather than picking one; where a fact could not be settled, the record says so. 3 such claims on 2 records. All regions.

Cadder Colliery

• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Cadder' (catalogue 7952, Shaft Section, dated 1923); 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)

Meiklehill Colliery

• The Durham Mining Museum lists six owners in succession: James Gairdner, James Gairdner and Sons, the Meiklehill Coal Co., James Wood Ltd, United Collieries Ltd and the Woodilee Coal and Coke Co. Ltd. It gives no dates for any of them, and none is recorded elsewhere. (uncertain)
• The BGS mine-plans catalogue holds a Mining Remediation Authority abandonment plan titled 'Meiklehill' (catalogue 8662, Main, dated 1926); 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)