Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Brynlliw Colliery, photograph
Underground view of coal face in the Six Feet Seam at Brynlliw Colliery. The seam, varying in thickness from 3' 1" to 7' 3", does not lend itself to to fully mechanised longwall mining and caused the management to re-think the system of working.
Pwnc
Diwydiant
Rhif yr Eitem
2017.53/156
Mesuriadau
Meithder
(mm): 206
Lled
(mm): 253
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.