Document qm9wYjEDw17J22YQ52zwBJm2G

Page 220 INDUSTRIAL MEDICINE STONe Quarrying Duildlr.; Excavating Mining Cutting Tobacco VITREOUS Granite, sandstone, ganister iM'jsrtxite rock) grindstone. Quartz. Oust from siliceous mater ials used, e.g., quartz, flint, feldspar, finely ground sili cates. Hock drilling, crushing, saw- handtooi cutting, Band blasting. machine surfacing, blasting, handling, tunneling, granite cutting, monuments, carving, masonry. Processing tobacco hanging, blending, ming, cleaning. leaf, stem Mixing, spray coating, sand blasting. Like mining, this industrywasj zi the most ~ silicosis. The introdactktt'-'i matic tools (1692) greatly^ the exposure to dusts 'rich, silica. A number of ** ations are carried on - that dust concentrations t However, an ' incidence of of 26% has been reported/jCHMfrti granite quarry industry; MoU dust control methods :hotrL&'?ij are expected to greatly'reddheVr figure. Recent studies indicate that^tbk'j halation of free silica qmd.ifa. clde dust may be of aigmiflcMije^j this industry. The free siUea:!/ tent of dusts found In; i plants ranged from 2 to Further investigation la required* ------------------ ----------- ^--gr?3 V. Nljfc In the glaze department in }poiihV teries, the glaze making is ah; titer*-;! mittent operation whieh exposes few men to heavy dust concentra*!;! lions for a few hours a ' v*3 Automatic spraying machines :nn4;$; exhaust ventilation are now into gcncrol use so that this hazard'^ will be eventually controlled. Industries Using Silica Bearing Materials Abrasives (Manufacturing) (Users of Abrasives) Brick and Tile (Brick Cutters--Sawing) Bed Rubbers (Stone) Bisque Kiln Workers Blasters--Foundry and Steel Buffers--Polishing Burners (Foundry) Burn Filers Casting Cleaners (Foundry) Cement Workers { ?) Ceramic Workers (See Pottery Workers) Furnace Chargers Charger (Smelting and Refinery) Chasers (Steel) Shippers Clay and Bisque Makers (Pottery) Clay Product Workers (Pottery) Concentrating Mill Workers Construction Workers . Cere Makers (Foundry) Crane Men (Iron steel--non ferrous) Crushermen (Clay and Stone) Cutlery Makers Diatnmaceous Earth Worker* Drillers (Rock--Stone) Excavation Workers (Construction! Fertilizer Makers Flint Workers Foundry Workers (Assemble) Fused Quartz Workers Class Furnace Workers Glass Mixers Glaze Mixers (Pottery) Grinders Grinding Wheel Makers Insecticide Makers Insulation Workers Jute Workers Masons Miners Planer Men (Stone) Polishers and Cleaners Pneumatic Tool Workers (Quarry and Mining) Porcelain Makers (Pottery) Pottery Workers Pouncers (Felt Hat) Qunrry Men Quartz Workers Road Repairing Rubber Workers Sand Blasting Sanders Sandpaper Makers Sand Pulverizing Surveyors (Stone) Scouring Powder Makers Scrapers (Foundry) Silicon Alloy Makers State Workers Smelters Soap Abrasive Workers Sodium Silicate Makers Stamp Mill Workers Statuary Workers Stone (Artificial) Makers Stone Masons Stone Workers Street Repairers Subway Construction Workers Tile Makers Tumbling Barrel Workers Tunnel Workers Zinc Smelters and Refiners Bibliography Johnstons, Rutherford. T.: Occupational Medicine and Hy giene. C. V. Mosby Co.. 1948. Gardner. L. U.: Etiology of Pneumoconiosis. 111: 21. November, 1938. Gardner, L. U.: The Pathology and Roentgenographic Mani festations of Pneumoconiosis. J.A.M.A., 114:7, February, 1940. Kammsr, A. G.: The Industrial Clinic and Its Functions. Fourth Saranac Laboratory Symposium on Silicosis. 1939. Lanza, A. J.: Silicosis and Asbestoais. Oxford University Press, 1988. Drinker and Hatch: Industrial Dust. McGraw Hill Book. Co.. 1936. . Brandt, A. D.: Industrial Healtb Engineering. Wiley 'aodv Sons. 1948. Occupational Disease Information Service. ...s" industrial Hygiene Service Bureau Inc., 1940. Kraus. Hunt and Ramsdrll: Mineralogy. McGraw HilL Book Co.. 1936. Pcrason and Schuchkrt: Introductory Geology. ,' Wikr and,: Sons. 1924. LaDoo. R. R.: Non Metallic Minerals: Occurrence, Prepra-'`| lion, Utilization. McGraw Hill Book Co., 1926.