Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes___________________?
Correct answer: D. All A., B. and C.
- A. Asphyxiation (suffocation)
- B. Shortness of breath
- C. Tuberculosis
- D. All A., B. and C.
Explanation
Inhaled silica dust causes silicosis, producing breathlessness and severely impaired respiration; it can also increase susceptibility to tuberculosis. Thus the listed respiratory effects are grouped under all of the above in this question.
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