Workings the [Upper] Yard Seam, Britannic Merthyr Colliery

Scope and Content

The plan is undated but shows workings dated [1898-1914]. Estate boundaries, specifying names of owners, are also shown on the plan.

Administrative / Biographical History

The location shown on the plan corresponds roughly to Ordnance Survey, Glamorgan Sheet 27SW. National Grid Reference for Britannic Merthyr Colliery: SS978903.

Custodial History

Previous reference number: DNCB/75/114