[Excerpt:]
Among the workers most affected are truck drivers paid to haul away the brine.
Often unknowingly, these tanker-truck drivers carry "hot loads" that average around 9,300 picocuries of radium per liter and can run as high as 28,500 picocuries.
Radium, which is abundant in brine, is so dangerous it is subject to tight restrictions, even at hazardous-waste sites.
Because radium contains the carcinogens radium-226 and radium-228, the Nuclear Regulatory Commission requires industrial discharge to remain below 60 picoruries per liter of each.
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