Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Dock Engineering Records > DG files: General dock files > File DG. 278 Pt. 4 'Factories Act, 1937: Accommodation for Clothing (Scaling and cleaning of boilers, cleaning of oil fuel tanks , bilges, provision of trestles, planks etc.'