Machinery and Apparatus Machinery and Apparatus

1. 81Construction, maintenance, &c., of machinery and apparatus.
2. 82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. 83Restrictions on use below ground of certain engines, &c.
4. 84Air, gas and steam containers.
5. 85. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .