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Silicosis in silica flour workers
The American Review of Respiratory Disease
|October 1, 1981
Summary
Silicosis, a lung disease from silica dust exposure, affected 37% of Illinois miners with over a year of work. These preventable cases highlight the need for strict dust control in mining operations.
Area of Science:
- Occupational Health
- Pulmonary Medicine
- Environmental Health
Background:
- Silicosis is a serious lung disease caused by inhaling silica dust.
- Mining and milling operations pose significant risks for silica dust exposure.
Purpose of the Study:
- To assess the prevalence of silicosis in silica mining and milling workers.
- To evaluate the effectiveness of dust control measures in preventing silicosis.
Main Methods:
- Health examinations of 86 current and former workers from two Illinois silica operations.
- Utilized respiratory questionnaires, spirometry, and chest radiographs for assessment.
- Reviewed federal dust inspection data from 1973-1979.
Main Results:
- No silicosis found in 25 workers with less than 1 year of silica dust exposure.
- Among 61 workers with 1+ year exposure, 26% had simple silicosis and 11% had progressive massive fibrosis.
- A significant portion of diagnosed cases began work after a 1973 Mine Safety and Health Administration inspection.
Conclusions:
- Silicosis is prevalent in workers with prolonged silica dust exposure.
- Identified cases of silicosis were preventable with adherence to existing dust standards.
- Emphasizes the critical importance of regulatory compliance for worker safety in mining industries.