The absence of iron or steel in any workshop, carriage, or boat; cleanliness and absence of grit; care as to material liable to spontaneous ignition; provision of lightning conductors on magazines; tools and implements to be of soft metal; working clothes without pockets; shoes without nails; searching or means to prevent the introduction of matches or dangerous substances into the works; materials and finished work to be removed from working buildings and not allowed to accumulate when any particular process is completed; no person under sixteen years to be employed or enter any danger building. Every building to be provided with a set of these rules, and a statement of the quantities of explosives and ingredients, and the work to be carried on in it as allowed by the license. The modern factory is generally situated in a rural district on account of the fact that it is more easy to observe the statutary distances from protected works. Protected works referred to in the Act include other workshops and magazines in the factory, and also dwelling-houses, factories, institutions, railways, highways, and various undertakings and buildings, the distances to be observed varying with the nature of the protected work from public highways to palaces or houses of residence of the King, his heirs and successors. In some cases, as with private dwelling-houses, the distance to be observed is about half, if the consent of the occupier to the erection of the factory building or magazine is obtained. Firework factories, in fact all explosive factories, are constructed on the principle of limiting the scope and effect of any explosion that may take place to the smallest possible quantity of material and to the smallest possible risk to human life. The working buildings are constructed with a door at either end to facilitate escape in case of danger; the quantity of chemicals and of partially or wholly finished fireworks is strictly limited, as is the number of persons employed in the building. This number varies with the nature of the operation being carried out, from one in the case of the most hazardous to six in some cases. The working buildings are of light construction; the form most in use is a timber framing lined with matched boarding and covered externally with corrugated iron. No iron fittings are used, or iron nails left exposed in the interior. The floor is covered with linoleum, which is secured by copper tacks. The distance separating working buildings is, generally speaking, twenty-five yards, or if a suitable screen is placed between two such buildings, this distance may be reduced to twelve yards. The workpeople are provided with non-inflammable outer garments, no pockets are allowed, and suitable overshoes of sewn leather or indiarubber are provided. All tools are of soft metal, such as brass or copper, or of wood.