Are there big problems with the very small? [Effect Measure]

Over the years I've seen more than enough of the murderous destruction "the magic mineral, "asbestos, has caused in the lives of workers and their families. Exposure to asbestos causes a serious, often fatal, scarring of the lungs called asbestosis and also two different kinds of cancer of the respiratory tract: lung cancer and mesothelioma. Both cancers are usually fatal, but while lung cancer can be caused by other agents like cigarettes and various occupational chemicals, mesothelioma is mos