_Definitions._—In these Regulations ‘lead process’ means pasting, casting, lead burning, or any work involving contact with dry compounds of lead. Any approval given by the Chief Inspector of Factories in pursuance of these Regulations shall be given in writing, and may at any time be revoked by notice in writing signed by him. _Duties of Occupier_ 1. _Ventilation._—Every room in which casting, pasting or lead burning is carried on shall contain at least 500 cubic feet of air space for each person employed therein, and in computing this air space, no height above 14 feet shall be taken into account. These rooms and that in which the plates are formed shall be capable of through ventilation. They shall be provided with windows made to open. 2. _Separation of processes._—Each of the following processes shall be carried on in such manner and under such conditions as to secure effectual separation from one another and from any other process: (_a_) Manipulation of dry compounds of lead; (_b_) Pasting; (_c_) Formation, and lead burning necessarily carried on therewith; (_d._) Melting down of old plates. Provided that manipulation of dry compounds of lead carried on as in Regulation 5 (b) need not be separated from pasting. 3. _Floors._—The floors of the rooms in which manipulation of dry compounds of lead or pasting is carried on shall be of cement or similar impervious material, and shall be kept constantly moist while work is being done. The floors of these rooms shall be washed with a hose pipe daily. 4. _Melting pots._—Every melting pot shall be covered with a hood and shaft so arranged as to remove the fumes and hot air from the workrooms. Lead ashes and old plates shall be kept in receptacles especially provided for the purpose. 5. _Manipulation of dry compounds of lead._—Manipulation of dry compounds of lead in the mixing of the paste or other processes, shall not be done except (_a_) in an apparatus so closed, or so arranged with an exhaust draught, as to prevent the escape of dust into the work room: or (_b_) at a bench provided with (1) efficient exhaust draught and air guide so arranged as to draw the dust away from the worker, and (2) a grating on which each receptacle of the compound of lead in use at the time shall stand. 6. _Covering of benches._—The benches at which pasting is done shall be covered with sheet lead or other impervious material, and shall have raised edges. 7. _Prohibition of employment._—No woman, young person, or child shall be employed in the manipulation of dry compounds of lead or in pasting.