Laser Distance Measuring Equipment Used by U. S. Army Topographic Command (USATOPOCOM) February-April 1971.
Radiation protection special study,
ARMY ENVIRONMENTAL HYGIENE AGENCY EDGEWOOD ARSENAL MD
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A special study of the potential hazards associated with the use of four types of laser distance measuring equipment used by USATOPOCOM was conducted during February - April 1971. The equipment, used for precise distance measurements over survey lines varying between 5 and 40 km, was found to emit potentially hazardous beams intensities at a range up to 300 m even for momentary viewing. Caution distances at which to limit long-term viewing extended to 9 km. Author
- Lasers and Masers