Document 4aOLo7yJdNe5KoNagwB60Vv1x

-80- the supervising personnel who in turn should "sell" the worker by education, possibly accompanied by strict and fair supervision and discipline, Employees exposed to dust hazards requiring the wearing of respirators should be convinced that it is essential to sacrifice some comfort and dignity to avoid serious cases of disability and suffer ing. Ever;.* worker should have his own respirator. It requires time and effort to adjusn this protective device so it contacts the face snugly with a minimum of headband tension. It cannot be expected that the average workman will readjust a dif ferent resnirator each dey. Also, the psychological effect of using a respirator wqm previously by another workman is not unimportant.' Although he may not say any thing about it, it is naturally revolting to most men's principles of bodily sani tation to have to clamp over his face a device that has been soaked v.-ith sweat end cirt of another man's face and into which one or more men have breathed day after day! It is too much like using the other fellow's tooth brush. The best practice is to mark every respirator so each workman can identify his own. (d) Use, Maintenance and Care of Respirators - Personal respirator;.- protective de vices must be maintained in a condition substantially the same as when received from the manufacturer. Depending on the density of the dust replaceable filters should be changed frequently to prevent their becoming clogged and usually it is desirable to use a respirator without a facelet. However, if they are considered necessary, the facelets should be chenged often to avoid skin irritation. A clean facelt gives the respirator a clean appearance and removes one objection to wearing it. The Colgate-?alnolive-Peet Company found that the habit of some workers of removing their respirators at intervals caused skin irritation, Everytime they did this, dust setnlec on the surfaces that lay next to the worker's fnoe and irritating particles were transferred to the skin when the device was replaced. It is, there fore, best to have the employee wear his respirator constantly while under exposure. In some cases, ointments or petroleum jelly has helped to overcame the irritating ef fect of points that coatacn the skin. Where a considerable number of respirators ere used, it is good practice to have a "Respirator Room" with an attendant who issues the respirators and cleans, sterilizes and otherwise keeps them in good condition. Respirators may be cleansed by washing and brushing them with an antiseptic soap and warm water. They should be checked for damaged or improperly functioning parts such as rubber valve seats and head-bancs. If defective, these should be replaced by new parts.' WHAT METICAL COHTP.CL SHOULD BE EXERCISED IK THE SEL5CTICK AKD SPPBHUISIOK 0 XEK WORK IMG CM DUSTY JOSS? - It is essential that adequate medical control be ex ercised. Such control should include the examination, prior to initial working on dusty jobs of the worker to insure that he is a suitable physical, subject. This ex* anination should preferably include X-ray examination of the lungs which permits closer control with subsequent X-ray tests as well as being a protection to the em ployer in the event of any later legal action. A worker, to be classed as physically suitable, should be in addition, de termined to be a nose-breather rather than a mouth-breather and the natural filter ing capacity of the hose should be found to be satisfactory. G. Lehmann (J. IncLHyg, 17,37 - 1935) indicates that the "Silicotic susceptibility of workers with poor na sal filtration is much greater than that of men with good nasal filters". Ee ad vises that jobs with a silioo3is hazard be held only by men with good nasal filters" and that mouth breathers are an especially bad risk. He suggests that the "dust re taining capacity of the nose be used as an index of the individual's qualification for working in a silicosis producing atmosphere". It is possible that Sternstein's technique for measuring nasal resistance ("Industrial Dusts - p.65) could be develop ed into a simple procedure for selecting men best adapted to dust exposure. According no Drinker and Hatch ("Industrial Dust" p. 32) it is wise to select 1^001570