- Radiation – Microwave
- Radio frequency fields
- Refractory ceramic fibers
- Registry of Toxic Effects of Chemical Substances (RTECS)
- Reproductive health
- Research 2 Practice Initiative (r2p)
- Research programs at NIOSH
- Research and training opportunities
- Respirators
- CBRN APR/APER NIOSH approved respirators
- CBRN SCBA NIOSH approved respirators
- Certification program support for respiratory manufacturers
- Certified equipment list
- Cleaning and sanitation procedures
- Manufacturer respirator certification support
- Mortality data
- National Personal Protective Technology Laboratory (NPPTL)
- Respirator user notices
- Standards development, CBRN
- Standards development, non-CBRN
- Use policy for protection against carcinogens
- Respiratory disease research program
- Respiratory disease surveillance
- Risk management – Control banding
- Rock drillers – Silicosis
- RTECS (NIOSH registry of toxic effects of chemical substances)
Contact Us:
- Centers for Disease Control and Prevention
- National Institute for Occupational Safety and Health (NIOSH)
- 800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 24 Hours/Every Day
- cdcinfo@cdc.gov



