Safety questions remain on chromium 6
NORMAN — University of Oklahoma associate professor Robert Nairn , an expert on water quality, became popular among friends and colleagues when a report came out Monday that questioned the safety of Norman's water.
“I got a lot of e-mails from people wondering what's going on,†said Nairn, who directs OU's Center for Restoration of Ecosystems and Watersheds.
The concern is about he...
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