Air and Exposure Standards, Lethal Human Doses Agent Workers[clarification needed] Stack Emissions[clarification needed] General Population Skin, LD(mg/kg) Intravenous, LD(mg/kg) Inhalation, LCt(mg-min/m3) GA 0.0001 0.0003 0.000003 14–21 0.014 135–400 GB 0.0001 0.0003 0.000003 24 0.014 70–100 VX 0.00001 0.0003 0.000003 0.04 0.008 20–50 H/HD/HT 0.003 0.03 0.0001 100 10,000