Non occupational exposure to silica dust
Sand quarry near California It has been mentioned by Ruble and Goldsmith[] that Goldsmith[] reported particulate matter less than 10 μm PM 10 and silica levels measured at two sites near a sand quarry near PM 10 concentrations for sites were and μg/m 3 and mean silica concentrations were and μg/m 3 respectively from 6 7% silica content in the PM