Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Use of Nitrogen in Controlling an Underground Fire at Fernhill Colliery (report)
Report written following a fire in an underground development heading driven from the upcast shaft at Fernhill Colliery, July 1962. 31 pages wiith additional six pages of tables and plan.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.