CHALMETTE, La. (AP) -- As the fourth anniversary of BP's Deepwater Horizon oil rig disaster approaches, workers who cleaned up oil in the Gulf of Mexico are able to file claims for medical problems they developed after the spill.
But questions about their long-term health linger.
Research being done by the government's National Institutes of Environmental Health Sciences may one day provide answers. The agency is tracking the health of more than 30,000 of those workers, hoping someday to see if there are links between exposure to oil spills and chemical dispersants and any current or future illnesses.
The leader of that study has a midday news conference set Friday to discuss what researchers have found so far.