Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

JavaScript appears to be disabled on this computer. Please click here to see any active alerts.

Re: Important Scientific Information Related to Draft Libby Amphibole Asbestos (LAA) Toxicological Assessment

Letter from Keith Cole requesting that new scientific studies be used to improve the NAS recommendations affecting the IRIS program.

Re: Important Scientific Information Related to Draft Libby Amphibole Asbestos (LAA) Toxicological Assessment (pdf) (1.72 MB)
Letter from Keith Cole requesting that new scientific studies be used to improve the NAS recommendations affecting the IRIS program.

Re: Important Scientific Information Related to Draft Libby Amphibole Asbestos (LAA) Toxicological Assessment

Managing the Quality of Environmental Information