Assertion: tracer | /r/HasProperty | needed
Facets:
Source sentences:
text: The tracers are transported in lead containers and special handling procedures are needed to reduce the radiation exposure to a minimum.
text: And while some groups say many more tracers might be needed, state contract documents and interviews with health officials offer a window into how Louisiana public-health officials are planning to deal with what epidemiologists say is a critical part of managing the health crisis while trying to reopen the state's economy.