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Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes | |
A. | asphyxiation (suffocation). [Wrong Answer] |
B. | shortness of breath. [Wrong Answer] |
C. | tuberculosis. [Wrong Answer] |
D. | all (a), (b) and (c). [Correct Answer] |