Federal Mine Agency warns of mercury risk.
D006801:Humans; D008452:Maximum Allowable Concentration; D008630:Mercury Poisoning / Q000453:epidemiology* / Q000517:prevention & control; D008906:Mining; D009784:Occupational Diseases / Q000453:epidemiology* / Q000517:prevention & control; D016272:Occupational Health; D012494:Sampling Studies; D014481:United States / Q000453:epidemiology