Safe foundry practice . ^ the man who is to be sup-plied. The air current should be so adjusted that itwill not only afford sufficient oxygen to serve for res-piration, but also prevent dust from rising into thehelmet through openings in the lower part of it. Inpractice, however, it is frequently found that the plan 54 THE TRAVELERS INSURANCE COMPANY. Fig. 15. A Special Chamber for Sand-blasting. (Strong air suction, through the exhaust hoods shown in the upper part of the picture, wiJ remove a large quantity of th^ dust that is created, but it would be better if the ducts were placed in the f
Safe foundry practice . ^ the man who is to be sup-plied. The air current should be so adjusted that itwill not only afford sufficient oxygen to serve for res-piration, but also prevent dust from rising into thehelmet through openings in the lower part of it. Inpractice, however, it is frequently found that the plan 54 THE TRAVELERS INSURANCE COMPANY. Fig. 15. A Special Chamber for Sand-blasting. (Strong air suction, through the exhaust hoods shown in the upper part of the picture, wiJ remove a large quantity of th^ dust that is created, but it would be better if the ducts were placed in the floor, with gratings over them, or in the side walls. The helmet which the operator is wearing is of a type commonly used in work of this kind, .^s explained in the text, no entirely satisfactory helmet has yet been devised.) SAND-BLASTING Cotirtes ilic WcsUrn Electric Nca
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectacciden, bookyear1920
