...thought were more highly exposed, telling them this is something they may wish to discuss with their physicians," said Rita Messing, Minnesota Department of Health toxicologist. Messing said she sent the letters on the basis of information from interviews...

...exposure survey" of about 2,700 area homes and about 6,000 current and former residents, beginning in April. Rita Messing, a department toxicologist, said the survey would attempt to identify any additional contaminated lots and people...

...regulation, plant operators would need to install better pollution-control technology in existing and future plants. Rita Messing, environmental toxicologist for the Minnesota Health Department, said officials began taking a closer look at ethanol...