Document 1QVGqj8b0J27ybVKDN3YMMG5a

CA Mactr CbamW Ww*. IfaafcA, A SiflHy IrnrntT.tm R&S 000804 107: 64*4*y Way! aklerida >wiw> and atfcaraaaumlnaau la PVC wnMiaf flaw Williamson, J.: Kavaaagh, B. (Water Auth Wttm Australia, Australia). Am /<td Hyg. Ateoc. J. 1*67, 48(61. 433-6 (Eng). Th* wldin* of PVC ahaete at 106* (U. 30* below the thermal PVC dmmpn.1 praaanta aw health iht. TV cuncm of CHi:CHCI vapnr in the welding area are 0.2 ppm; the HCl eonrnu arr O.fi 10 ppm. Only trace* of C*H, HCHO. and AcH can be detected by (u chromatog 107:6404 It Chemical eartridc* reaplrator parformsnee: 14-e butadiene. Ackley, Mark W. (A Figgie lnt. Co., Lancaster, NY 14086 USA). Am. Ind. Hyg. Assoc. J. 1087, 48(6). 447-63 (Ena). The performance war la*Led of 3 type* of twin cartridge* for the Scott pcnonal respirator* in removal of 1,3-butadiene (I), a carcinogen, from air. The petroleum, coconut shell, and coal-baaed activated C performed squally well in reducing I eonens. from 100 ppm or 1000 ppm to 10 ppm level. The cartridge service life was decreased by high air humidity and temp. However, the cartridge regeneration with clean air was enhanced by high humidity and temp. The kinetic rate coasts, of 1 adsorption by 3 types of Scott respirator cartridges were detd. 107: (4042a Asbestos exposure during renovation and demolition af asbestos-cement clad buildings. Brown, Stephen K. (Div, Build. Res., CSIRO, Highett, 3190 Australia). Am. Ind. Hyg. Assoc. J. 1987, 48(5), 478-86 (Eng). The weathering of walls and roofs of asbestos fiber-eontg. concrete slabs or sheets exposes asbestos fibers which become airborne during the renovation or demolition of old structures. The concn. of asbestos fibers in air during water-jet cleaning of weathered asbestos cement roofing was 0,1-0.2 fibers/mL. During demolition this concn. wts 0.3-0.6 fibers/mL for roofs and <0.1 fibers/mL for walls. The use of protective clothing and respirators during these activities is recommended. 107: 64043b Exposure to asbestos during brake maintenance of automotive vehicles by different method*. Kauppinen, Timo; Korhonen, Kari (Inst. Occup. Health, SF-00250 Helsinki, Finland). Am. Ind. Hyg. Attoc. J 1987. 48(5), 499-504 (Eng). The background concn. (C. in fibers/mL) of airborne asbestos fibers in a brake maintenance garage was 0.1, but during grinding of asbestos pads to fit the brake shoes of large drum brakes, C could reach 125 (mean 56) if no local exhaust system was used. The continuous occupations] exposure limit to asbestos is 0.5-2 fibers/mL in most countries. Tbeir value was exceeded only briefly when no exhaust system was used during the grinding of asbestos pads. 107:64044c Creatinine nnd specific gravity adjustment of ALA in urinary spot samples: is there any need? Dell'orto. A.; Berlin. A.,- Toffoletto, F.; Loeito, B.; Aleaeio, L. (1st. Med. Levoro, 25123 Brescia, Italy). Am. Ind. Hyg. Assoc. J. 1987, 48(5), A-331-A-333 (Eng). The relations were examd. between the Pb levels in the blood of 10 foundry and battery workers and the levels of creatinine and aminolevulinic acid (ALA) in their urine. The study showed that the usefulness of creatinine and urine d as correction parameters in the ALA detns. is doubtful. However, creatinine and d. detns. can be useful In selecting over-dild- or over-concd. urine samples. 107: 64045d Exposure to carbon disulfide and ischemic heart disease in a viscose rayon factory. Sweetnem, P. M ; Taylor, S. W. C.; Elwood, P. C. (Epidemiol. Unit, MKC. Cardiff, UK CF2 3AS). Br. J. Ind. Med I87, 44(4), 220-7 (Eng). The cohort of viscose rayon workers previously described by S. R. Tiller et si. (1968) was reconstructed and followed up to the end of 1982. The pattern of mortality at ages 45 to 64 for the period 1950-82 is similar to that for 1950-64. The spinners, the workers most heavily exposed to CS2, have a significantly higher mortality from all causes than the least exposed group. The excess mortality is largely accounted for by ischemic heart disease (IHD). Both all cause and IHD mortality increase with increasing exposure to CSj When this anal, is repeated covering all ages, these trends become much less strong and only that for IHD remains significant. Over the age of $5 there is a tendency for mortality to decline with increasing exposure This is contrary to the expectation under the hypothesis that CS: promotes atherosclerosis and suggests that it has some type of reversible, direct cardiotoxic or thrombotic effect. This is supported by the findings that there is a atrong trend for IHD mortality to increase with increasing exposure in the previous 2 yr. Further, both IHD and total mortality show significant trends with exposure among current workers but no auch trends among workers who left the industry. 107:64046e A mortality study of nickel/chromium platers. Sorahan. T.; Burges, D. C. L.; Waterhouse. J. A. H. (Center Epidemiol. Res Unit. Unit. Birmingham. Edgbaston/Birmingham. UK BIS 2TH). Br J Ind Med 1987, 44(41, 250-S (Eng). The mortality in a cohort of 2689 Ni/Cr platers between 1946 and 1983 was investigated All members of the cohort had some period of employment assoed with Cr exposure. Overall, compared with the general population of England and Wales, statistically significant differences were found for cancer of the stomach, primary cancer of the liver, cancer of the noee and nasal cavities, cancers of the lung and bronchi, and all cancers. Cr bath workers arr the more heavily exposed workers, and a striking difference in statistical mortality rates (SMRl was found for lung cancer among men 1st employed as Cr bath workers (SMR 1991 and men 1st employed as other Cr workers (SMR * 10J > The method of regression models in life tables wwa uaad to compare the dunttona of Cr-axpoaad amptoytoant of thoa* dying from cauoea of interest with those of oil matching survivof* in tM asm* year of follow-up, whila controlling for aax, ana for yaar and age of starting employment. Significant poa. aaaocn*. w*tt (nund only far cancers of the tuna end bronchi sM duration f Cr hath wnrk. In thi* study, exposure to Ni we* not an importeni confounding exposure 107:64047f Organic aalveats aad preaaeila damantis: a case referant atudy uaieg daath cnrtlficatee. O'Flynn, R- R ; Monkman, S. M.; Waldron, H. A. (Dap. Psychiatry, UMDS, London. UK SE1 9RT). Br. J. Ind. Med. 1*87, 44(4), 259-62 (Eng). The daath certificates of all men under 65 who died in England and Walaa of praaanile dementia were collected for 1970-9. Control daath certifiestee were matched for age and aex. There was no significant difference between the group* with respect to estd. occupational exposure to either org. solvent* or Pb. 107: 64048c Squamous osll cancer of the maxillary ainu* in Hokkaido, Japan: a easa-control study. Fukuda, K.; Shibata. A.; Hands, K. (Sch. Med., Kurume Univ., Fukuoka, Japan 830). fir. J. Ind. Med. 1987, 44(4), 263-6 (Eng). A case-control study of squamous cell cancer of tbe maxillary ainu* waa performed in Hokkaido, Japan, with 106 cases and 212 controls matched for aex. age (within 5 yr.), and residence. Univariate analyse* showed that a history of chronic sinusitis (relative risk, RR *> 3,2), nasal polyp* (RR S.O), an occupational history of being a carpenter, joiner, furniture worker, or other woodworker (RR * 2.9), and current or past smoking habits (RR * 3.0) were statistically significant risk factors for men. No single item was a significant risk factor for women. 107: 64049h Potential nephrotoxic effects of exposure to silver. Roeenmsn, K. D.; Seises, N.; Jacobs. I. (New Jersey Dep Health. Trenton. NJ 08625 USA). Br. J. Ind Med. 1987, 44<4|, 267-72 (Eng). A cross-sectional study was conducted on workers engaged in manufg. precious mete) powder. Of the 27 workers, 96% had elevated urine Ag (0.5-52.0 ng/L) and 92% had alevated blood Ag (0.05-6.2 |ig/L). Nineteen percent alio had raised urine Cd (1.9-76.0 ug/L. Most workers had symptoms of respiratory irritation, end noee bleeds were reported in 30% of the workers. Deposition of Ag in the cornea of the eye was detected in 93% of the long-term worker*. Although not statistically aignifleant, corneal deposition was aaaoed. with complaints of impaired Dighi vision. The urinary enzyme N-acetyl-0-D-flucoeaminidaae (NAG) was significantly raised in 4 individuals and waa correlated with blood Ag and age. Tbe group's av. NAG was higher than that of a control population. No assocn. between age and urinary NAG was found in the control group. Eetd. creatinine clearance waa also significantly lower in the group exposed to Ag than in the control group. Kidney function was adversely affected by exposures at work, but because of tbe exposure to Cd the role of Ag could not be detd. 107:64050b Incidence of cancer among vinyl chloride and polyvinyl chloride workers: further evidenee'fbk an association with malignant melanoma. Storetvedt, S.; Daas, Hel. Andersen. A. A.: Langard, S. (Health Dep./Res. Cent., Norsk Hydro A/S. Oslo, Norway). Br. J. Ind. Med 1987, 44(4), 278-80 (Eng). An increased incidence of malignant melanoma of the skin, lung cancer, and colon cancer were found in 430 male workers exposed to vinyl chloride and PVC, thus confirming the results of a previous study that vinyl chloride may act as a multicarcinogen. 107:64051c Conjugal exposure to polychlorinated biphenyls (PCBs). Fischbein, A.; Wolff, Mary S. (Mount Sinai Sch. Med , City Univ. New York, New York, NY 10029 USA). Br. J. Ind Med. 1987, 44(4), 284-6 (Eng). Anal. chem. evidence is given of 2 cases of PCB transmission from transformer maintenance workers to their wives whose household exposure occurred through PCB-contaroinated clothes. 107: 64052d Analysis of respirable and sedimented duet sample*. Antal, L.; Hlavsv, J.; Karpati, J. (Inst. Anal. Chem., Univ. Chem. Eng., H-8201 Veszprem, Hung). Period Polyteeh., Chem Eng 1986, 30(3-4), 209-12 (Eng). In an enamel factory. 1,2-22 mg respiratory dust was collected by a personal membrane sampler. The samples contained chrysolite, Ca silicates and aluminatea, brownmillente. calcite, quartz, and hemolite. The av. diam. of the dust particles was 2.54 0.086 i>. The roelal compn. of the dust was also detd. 107:64053e Calculating fire-throttling of mine ventilation airflow. Litton, Charles D.; DeRosa. Maria; Li. Jingshu (Pittsburgh Res. Cent., Bur Mines. Pittsburgh, PA USA). Rep Invest. - V S, Bur Mines 1987, R1 9076, 21 pp. (Eng) Tests were conducted m an intermediate-scale fire tunnel and a large-scale fire gallery to study the effects of a fire on the ventilation system of underground mines Based on anal, of the results, a limit fire size is predicted dependent only upon the passageway dimensions below which ventilation redns are significant and idependent of fire aize. For larger fires a simplified theory based upon the measurement of CO.- eonens is valid Continuous monitoring of CO. conens. can also provide information relative to fire hazards 107: 640S4f Chronic bronchitis in workers from various haz ardous workplaces in a broneboscopic examination. Vyskocil. Jiri, Uchytil, Borivoj. Krpenskv. Antonin; Kucera, Petr, Rytankova. Jitka (Klin. Nemoci Povoiani, LF UJEP, Brno, Czech.). Proc Leh 7' '/ -