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Health hazard evaluation determination report: HHE-79-103-108, Illinois Minerals Company, Elco, Illinois.

Authors
Morring KL; Banks DE
Source
Morgantown, WV: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HHE 79-103-108, 1979 Jan; :1-41
NIOSHTIC No.
00197167
Abstract
In response to a request from the Mine Safety and Health Administration to investigate the health of employees exposed to silica (7631869) containing dust at Illinois Minerals Company located in Elco, Illinois, a hazard evaluation was conducted. The silica dust on site was approximately 100% alpha-quartz (14808607). Median particle size from air sampled in the facility ranged from 2.3 to 4.9 microns which is well within the respirable range. Of the 57 samples taken, 49 were above the NIOSH recommended limit of workers with less than one year exposure. Three of the fifteen current workers with one or more years of exposure and 14 of the 24 exworkers studied had radiographic changes indicative of silicosis. In workers and exworkers with one or more years of exposure, 17 of 39 had x-ray evidence of silicosis. This very high prevalence of silicosis is due to the respirable size of the particles. It was recommended that engineering controls be implemented to reduce and maintain free silica dust levels to current acceptable exposure limits. The conclusion of the study was that there is a significant health hazard present at this location and continued worker exposure will cause irreversible harm to such a degree as to shorten life.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; HHE-79-103-108; Region-5; Hazard-Confirmed; Dust-inhalation; Mineral-dusts; Respiratory-system-disorders; Lung-function; Airborne-dusts; Mining-industry; Mineral-processing; Author Keywords: Silica; Silicosis
CAS No.
7631-86-9; 14808-60-7
Publication Date
19790101
Document Type
Field Studies; Health Hazard Evaluation
Fiscal Year
1979
NTIS Accession No.
PB80-163207
NTIS Price
A04
Identifying No.
HHE-79-103-108
NIOSH Division
DRDS
Priority Area
Respiratory-system-disorders
Source Name
National Institute for Occupational Safety and Health
State
IL; WV
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division