Uranium exposure limits in dispute.
D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D004781:Environmental Exposure; D008452:Maximum Allowable Concentration; D008906:Mining; D014501:Uranium / Q000633:toxicity*
D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D014501:Uranium