Lawrence Berkeley National Laboratory
Donald Lucas, Lawrence Berkeley National Laboratory in California, outlined his work on the formation of toxic products during fires, and especially the inhalation of combustion derived particulates, causing 10 million deaths per year worldwide (including diesel fumes, wood burning industry and agriculture).
He showed that the smaller the particle, the larger the adverse health effects, but that after emission, agglomeration reduced the toxicity. However, the time and distance scales over which this occurred were largely unknown.