In the mid 1970s, the Mohawk Indians of Cornwall Island, Ontario, Canada asked Dr. Krook to investigate the progressive and devastating disease in their cattle, which they suspected was caused by emissions from a nearby aluminum plant. He provided extensive clinical, post-mortem, and chemical examinations to show that the causes was fluoride poisoning from industrial pollution. His findings were the basis for a class-action lawsuits by the Mohawk against Reynolds Metals (now Alcoa). This experience was followed by several similar lawsuits in which he always worked for the offended party, and always pro bono.
Lenart Krook died April 24, 2010
Henry Lickers spoke at the 2004 First Citizens Conference on Fluoride. The pollution of Cornwall Island started in the 1950's and was still going on in 2004.