Dr Trevor Ogden
After a PhD in atmospheric physics at the University of Durham, Trevor Ogden worked with a cloud physics group in CSIRO in Sydney, partly to measure particles in clouds. In 1971 he went to work at the Institute of Occupational Medicine in Edinburgh, mainly on measuring dust in coalmine air. This work resulted in the concept, now universally accepted, of measuring the larger dust fraction using on an ‘inhalable’ convention, based on what enters the mouth and nose. In 1977 he moved to the Health and Safety Executive (HSE) laboratories in Cricklewood, London, also mainly on dust, in which the principle problem was bringing the methods of measuring airborne asbestos to a reasonable standard of reliability. After a spell in policy work, including three years chairing the Working Group on Action to Control Chemicals (WATCH) committee on exposure limits and other standards, he took early retirement from HSE in 1996, and then edited the journal Annals of Occupational Hygiene for 15 years finishing in 2012.