... hazards are airborne uranium, radium, and high content silica dusts. 10:45 A.M. - Mr. Pope Lawrence ( ... limit for natural uranium; the mean concentration of silica- +} € bearing dust is lower than the ACGIH threshold ...

... the dust problen, especially with relation to the silica content of the dust; a determina- tion of ... silicosis control, using the ore of highest free silica content (70 " percent), should be used as a ...

... is attached covering sereen analysis and a free silica determination on a sample of silica sand which was submitted by you on February ... examined under the Petrographic Microscope and no free silica was found. BIseussios * 1. The above operation is ...

... to external radiation, radon gas, ami a high silica dust — containing an undetermined amount of radicactivity. In ... dust preb- lem, especially with relation to the silica content of the dust; a deter~ minetion of ...

... medical studies were made of the lead and silica hazard in the pottery industries in California and ... and buffed. TOXIC AGENTS SUGGESTED CONTROL MEASURES 1. Silica. 1. General exhaust ventilation. 2. Carbon monoxide. 2. ...

... rock mining, or non-radioactive ore constituents, including silica dust. ENVIRONMENTAL FINDINGS Uranium miners are exposed to ... inherent in the mining industry, such as accidents, silica dust, diesel and explosive fumes, and high-level ...

... tae: have ‘pean. formulated on ‘the basis of silica _ control in hard-rock mining. Tsivoglou, Ayer, and ... utilizing less ventilation than required to con- trol silica. The fact was made clear, however, that where ...

... kero~ sene, Varnoline. (Mfr.) Insecticide About 5% free silica. (Anal.) Deterg., Monoethyl phenyl phenol sodium wetting, disper. ... Ind. Solvent Thinner Cementing Phosphorated amine, (Lit.). Petrographic - silicon dioxide 5%. (Anal.). Sodium hexameta phosphate. Mixture of soap ...

... exposures to lead, chronium, carbon tetrachloride, cyanides, cadmium, silica, fluorides, and welding hazards, The engineer, for example, ... health hazards of carbon monoxide, cadmium, metal fumes, silica dust, car- bon tetrachloride, and degreasing agents as ...

... to Employees ENGAGED IN INDUSTRIES WITH ¢ Hazard OF Silica or Asbestos _ Dust : OTHER OCCUPATIONAL DISEASES Issued by ... barred unless employee shall have been exposed to Silica dust in emplo in this State for not ...