| The Blasting (Castings and other Articles) Special Regulations 1949 |
| Regulation 12(3) | Minimum rate at which clean air to be supplied to helmet | six cubic feet per minute | 170 litres per minute |
| Regulation 17(2) | Minimum distance from blasting enclosure | twenty feet | 6 metres |
| The Iron and Steel Foundries Regulations 1953 |
| Regulation 5 | (a) Distance from spout of cupola or furnace within which work not to be carried out | twelve feet | 4 metres |
| (b) Distance from ladle within which work not to be carried out | eight feet | 2.4 metres |
| Regulation 6(1)(c) | Minimum width of certain gangways | three feet | 920 millimetres |
| Regulation 6(1)(d)(i) | Minimum amount gangways shall be wider than overall width of ladle | two feet | 600 millimetres |
| Regulation 6(1)(d)(ii) | Minimum width of certain gangways | three feet | 920 millimetres |
| Regulation 6(1)(d)(iii) | Minimum width of certain gangways | four feet | 1.2 metres |
| Regulation 6(1)(d)(iv) | Minimum width of certain gangways | six feet | 1.8 metres |
| Regulation 6(2)(a)(iii) | Minimum width of pouring aisles | eighteen inches | 460 millimetres |
| Regulation 6(2)(b)(ii) | Minimum width of pouring aisles | eighteen inches | 460 millimetres |
| Non-Ferrous Metals (Melting and Founding) Regulations 1962 |
| Regulation 2(2) | Definition of “degrees” | degrees Fahrenheit | degrees Celsius |
| Regulation 10(1)(a) | (a) Minimum width of pouring aisles | eighteen inches | 460 millimetres |
| (b) Minimum height of moulds above floor | twenty inches | 510 millimetres |
| (c) Minimum width of pouring aisles when moulds alongside are more than minimum height above the floor | twenty-four inches | 600 millimetres |
| Regulation 10(1)(b) | Minimum width of pouring aisles | thirty inches | 760 millimetres |
| Regulation 10(2)(a) | Minimum width of certain gangways | three feet | 920 millimetres |
| Regulation 10(2)(c)(i) | Minimum amount gangways shall be wider than overall width of ladle | two feet | 600 millimetres |
| Regulation 10(2)(c)(ii) | Minimum width of certain gangways | four feet | 1.2 metres |
| Regulation 10(2)(c)(iii) | Minimum width of certain gangways | six feet | 1.8 metres |
| Regulation 14 | (a) Minimum room temperature | fifty degrees | 10 degrees |
| (b) Maximum outside temperature at which proviso applies | thirty degrees | −1 degree |
| (c) Minimum amount by which room temperature should exceed outside temperature | twenty degrees | 11 degrees |
| Regulation 15(2)(c) | Maximum interval at which taps or jets to be fitted to trough | two feet | 600 millimetres |
| Regulation 15(3)(a) | (a) Definition of “unit” in terms of length of trough | two feet | 600 millimetres |
| (b) Definition of “unit” in terms of section of circumference of trough | two feet | 600 millimetres |
| Regulation 15(3)(c) | Minimum internal measurement of basin or other receptacle | four feet | 1.2 metres |
| Regulation 17 | Minimum height to which walls are to be cleaned | fourteen feet | 4.2 metres |