Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Setting Supports Underground (booklet)
21 page booklet with red covers, stapled at centre. Issued in compliance with the Mines and Quarries Act 1954, Section 54 (6).
Pwnc
Diwydiant
Rhif yr Eitem
2001.1/763
Mesuriadau
Meithder
(mm): 112
Lled
(mm): 182
Dosbarth
roof supportNid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.