New tests for residents near big gold mine

The samples will be carefully tested at the well-equipped laboratories of Ramathibodi Hospital and the Medical Sciences Department, he said.

"We are going to look for traces of manganese, arsenic and cyanide, as activists have claimed that these toxic substances have leaked from the goldmine," he said. 

The last test on 700 people in August found heavy metal levels in blood that were above average in more than 400 of those tested. 
http://www.nationmultimedia.com/national/New-tests-for-residents-near-big-gold-mine-30271132.html