National Institute for Occupational Safety and Health; certification of respiratory devices used to protect workers in hazardous environments--NIOSH. Notice of priorities for rulemaking.

In response to public comments received from its May 16, 1996, request (61 FR 24740), NIOSH is announcing the intended priority order for the development of the next proposed rule amendments (modules) to the current NIOSH procedures for certifying respiratory devices used to protect workers in hazardous environments. The priority order is based on the comments and data in the public record. The priority order of the planned modules is provided to help the respirator community plan for potential changes.