Workings in the Yard Seam undertaken by Glenavon Garw Collieries

Scope and Content

The plan is undated but shows workings dating [1923-1937]. The plan is also annotated with unidentified estate boundaries. Scale 1:2500.

Administrative / Biographical History

The location shown on the plan corresponds roughly to Ordnance Survey, Glamorgan Sheet 26.7. National Grid Reference for Glengarw Colliery: SS902929.

Custodial History

Previous reference number: DNCB/75/64