OSHA issued a Notice of Proposed Rulemaking to add two quantitative fit-testing protocols to the agency's Respiratory Protection Standard. The proposed protocols are variations of the existing OSHA-accepted PortaCount® protocol, but differ from it by the exercise sets, exercise duration, and sampling sequence. The protocols would apply to employers in the general, shipyard and construction industries. OSHA invites the public to comment on the accuracy and reliability of the proposed protocols. Individuals may submit comments electronically at www.regulations.gov, by mail or facsimile by Dec. 6. For more information, see the news release.