GREEN BAY, Wis. (AP) — Brown County's former health director is among those who have reported health problems related to wind power, just as developers are considering a couple of high-profile projects in Wisconsin.

USA Today Network-Wisconsin (http://gbpg.net/1UfjXRz ) reports that former Brown County Health Director Chua Xiong said in an email to an intern on Nov. 21 that she gets migraine headaches when she visits the Shirley Wind Farm.

Brown County Citizens for Responsible Wind Energy claims the email is evidence that the low-frequency sound from wind turbines has caused some residents to suffer from health problems.

In December, about a month after she sent the email, Xiong ruled that there isn't enough evidence to link the turbines and illnesses.

Xiong resigned as health director this month to take another job. She couldn't be reached for comment Sunday.