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Record
CEFND - Cefn Du Manuscripts
366-472 - Works costs - Labour
446-472 - Labour regulation - factory registers, industrial insurance etc.
Alt Ref No
CEFND/467a
Title
Rheolau er mwyn osgoi damweiniau yn y chwarel "Er mwyn rhagflaenu damweiniau - dilynir y Rheolau canlynol - sydd yn gweithio yn Chwarelau Dinorwig"
Date
d.d.
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