Precise definitions of navigable waters of the United States or navigability are ultimately dependent on judicial interpretation and cannot be made conclusively by administrative agencies.
Formaldehyde Poisoning is a disorder brought about by breathing the fumes of formaldehyde. This can occur while working directly with formaldehyde, or using equipment cleaned with formaldehyde. Major symptoms may include eye, nose, and throat irritation; headaches; and/or skin rashes.
Symptoms of methylmercury poisoning. In addition to the subtle impairments noted above, symptoms of methylmercury poisoning may include; 1  impairment of the peripheral vision; 2  disturbances in sensations (pins and needles feelings, usually in the hands, feet, and around the mouth);  lack of coordination of movements;