Gyan Rajhans, P.Eng., CIH, ROH
Amethyst award 1995
For outstanding achievement by Ontario Civil Servant in Occupational Health & Safety.   
Hugh M. Nelson Award 1997
Award of Excellence in Occupational Hygiene by the Occupational Hygiene Association of Ontario.
Life Achievement Award 1999
By OH&S Magazine, Canada.
Special Recognition at Life Achievement Award  
Gyan Rajhans is most celebrated for his 1976 work which demonstrated the link between carbon dioxide levels in indoor air, an indicator of inadequate fresh air supply, and the set of symptoms that characterize sick building syndrome. He was also instrumental in the development of the first detailed protocol of IAQ investigations, published by the Ministry of Labour as part of its 1988 Inter-ministerial Committee Report on IAQ. 
Award of Excellence 2000
For Professional Achievements by Industrial Accident Prevention Association (IAPA) sponsored by 3M Canada.
Meritorious Achievement Award 2009
Link to Indo Canada Outlook
Link to CCOH
Link to ACGIH
Registered Professional Engineer, Ontario (P.Eng.) 1966
Certified Industrial Hygienist (CIH) 1982
Registered Occupational Hygienist (ROH) 1988
Gyan Rajhans
Awards & Certificates


Gyan Rajhans