Terry, Here is a web site from New Jersey which has the OSHA warnings: http://www.state.nj.us/health/eoh/rtkweb/0616.pdf#search='diatomaceous%20earth%20manufacturers' Check out the 'Health Hazard Information'; under Acute Health Effects it says "This form of silica is considered a nuisance dust." Under Chronic it says that there is no evidence that it causes cancer in test animals. And, it hasn't been tested for anything else. The New Jersey page was taken from the OSHA. Even if it is 'clumped' they haven't found anything to prove that it can cause cancer, or any other problems. I tried to use the URL that you give and can't find anything on DE under any of the links. Bill Keen
Terry Chamberlin <[email protected]> wrote: Just a bit more info about food and other grades of DE:
