Asbestos is taking a severe toll of the southern Quebec community of Thetford Mines in Canada. Many homes are "severely contaminated," and they pose a dangerous public health risk, according to a new study released Wednesday.
Thetford Mines was founded in 1876 after the discovery of large asbestos deposits in the area, and the city became a hub for one of the world's largest asbestos-producing regions. Over 26,000 residents live in the area, located just over 100 kilometres south of Quebec City.
The exploratory sample report, published in the International Journal of Occupational and Environmental Health, documented levels of asbestos inside and outside 26 private residences in the community that significantly exceed internationally accepted limits.
"The population at large in these towns are at an elevated risk of developing asbestos-related diseases," said William Charney, an American occupational health expert and the study's lead author.
Such diseases include lung cancer, mesothelioma a cancer of the lining of the chest and the abdominal cavity as well as asbestosis, a chronic breathing disorder in which the lungs become scarred with fibrous tissue.
The symptoms of these diseases do not usually appear until about 20 to 30 years after the first exposure to asbestos. Richard Rousseau, founder of the Asbestos Victims Association of Quebec (AVAQ), helped the researchers with the study. His father, Hervé Rousseau, a retired miner, suffers from pleural plaque disease, a hardening of the membrane around the lungs.