Cancer linked to Rohm and Haas?

This article describes the odd circumstances surrounding the development of 30 cases of a rare brain cancer. Frank Branham developed brain cancer after working in McCullom lake, a small community in Illinois. After he died, his wife asked around and found out that two of their neighbors, who had worked in McCullom as well. A local chemical plant, Rohm and Haas, is blamed for the cancer development, which normally strikes 7 out of 100000 people.

http://www.cnn.com/2010/HEALTH/09/14/mccullom.lake.cancer.cluster/index.html