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Silicosis in shipyard sandblasters.

Authors
Weill-H; Anderson-AE; Samimi-B; Neilson-A; Waggenspack-C
Source
Environ Res 1976 Apr; 11(2):237-243
NIOSHTIC No.
00107922
Abstract
Silicosis in 22 shipyard sandblasters (SIC-3731) was studied by clinical, roentgenographic, and physiologic tests. Seventeen of the workers were from shipyards in New Orleans, Louisiana, and 5 were from Jacksonville, Florida. Half of the total group were dead, with the average age at death being 48.5 years. The average age of the surviving subjects was 43.6 years. Occupational exposure to silica (7631869) averaged 9.7 and 12.4 years for the fatal cases and survivors, respectively. About half of the fatal cases worked without air supplied hoods. Massive lesions were seen on chest roentgenograms in 15 of the subjects. Many of the sandblasters had mycobacterial infections. Rapid deterioration of pulmonary function, as evidenced by chest x-rays, was seen in the patients. The averages of all pulmonary functions of the living subjects were below 80 percent of the normal value. In the fatal cases, reductions for all functions were severe. The terminal picture showed restriction of lung volume with reduction of total lung capacity, vital capacity, and pulmonary diffusing capacity, associated with low air flow rates. Even with protective measures, silica dust concentrations often exceeded the threshold limit value. The authors conclude that fatal sandblasters silicosis follows a rapid course. They suggest that exposure to respirable free silica is still excessive even when a modern air supplied hood is used during blasting. They recommend the monitoring and regulation of free silica exposure in workers.
Keywords
NIOSH-Publication; NIOSH-Grant; Silicates; Lung-fibrosis; Industrial-factory-workers; Ionizing-radiation; Clinical-chemistry; Physiological-chemistry; Mortality-rates
Contact
Medicine Tulane University 1430 Tulane Avenue New Orleans, LA 70112
CODEN
ENVRAL
CAS No.
7631-86-9
Publication Date
19760401
Document Type
Journal Article
Funding Amount
177847
Funding Type
Grant
Fiscal Year
1976
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-00387
Issue of Publication
2
ISSN
0013-9351
Priority Area
Pulmonary-system-disorders
SIC Code
3731
Source Name
Environmental Research
State
FL; LA
Performing Organization
Tulane University, New Orleans, Louisiana
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