铅 Lead
硅土 Silica
焊接烟 Welding Fumes
煤 Coal
木材/纸张Wood/Paper
泥土/水泥 Concrete/Cement
铬酸盐 Chromate
滋扰粉尘 Nuisance Dust
制药尘 Pharmaceutical Dust
干化学物质 Dry Chemicals
重金属/PCB's Heavy Metals/PCB's
喷漆 Paint Spray
谷物 Grain
建筑粉尘 Construction Dusts
土壤污染 Toxic Soil Remediatio
