Michael Abramson: "The lungs of city dwellers are much dirtier than the lungs of rural dwellers. So that if a post mortem examination is performed, you actually see the black deposits on the outside of the lungs of city dwellers and also in the lymph glands in the middle of the chest.
And this is true, even in people who haven’t worked in a coal mine or haven’t smoked. It’s simply the effect of breathing in fine particles over the years of a lifetime.
Diesel vehicles are a major source of fine particles. We tend to measure them by their size in thousandths of a millimetre, so they really are quite small, and the two fractions that are most widely discussed are what’s called PM-10, that’s particulate matter with a diameter less than 10-thousandths of a millimetre, and PM-2.5 which is the fraction where the diameter is less than 2-1/2 thousandths of a millimetre. And for the PM-10 fraction, we know that about 75% of that comes from diesel exhaust, 75% that’s contributed by mobile sources"
"Diesel exhaust is a chemical cocktail of about 450 different compounds. At least 40 are toxic contaminants like arsenic, benzine, cadmium, dioxins, toluene and formaldehyde.
Even the two most carcinogenic chemicals ever discovered, 3-nitrobenzanthrone and 1,8-dinitropyrene, are found in diesel exhaust, especially from engines working under heavy load."
http://www.abc.net.au/rn/talks/8.30/hel ... 838424.htm
"Black carbon is a major component of inhalable particulate matter (particulate matter <10 µm in aerodynamic diameter [PM10]) directly emitted from the combustion of fossil fuels."
http://content.nejm.org/cgi/content/ful ... a72c36edef
A VIEW FROM THE OTHER SIDE
Presented to: TIME Magazine
By Brown & Williamson Tobacco Corp.
Date: July 7, 1970
"Dr. Duane Carr-Professor of Surgery at
Tennessee College of Medicine, said this:
"Smoking does not discolor the lung.
Dr. Victor Bubler, Pathologist at St. Joseph
Hospital in Kansas
City: "I have examined thousands of lungs both grossly
and microscopically. I cannot tell you from examining a
lung whether or not its former host had smoked.
"I state flatly, unequivocably and emphatically
that cigarette smoke will not turn the lung black.
Dr. Sheldon Sommers, Pathologist and Director of
Laboratories at Lenox Hill Hospital, in New York:
it is not possible grossly or microscopically, or
in any other way known to me, to distinguish between the lung
of a smoker or a nonsmoker. Blackening of lungs is from carbon
particles, and smoking tobacco does not introduce carbon
particles into the lung."
"It would thus appear that at best this claim is
supportable and at worst, that it is another
deliberate attempt to frighten
http://www.library.ucsf.edu/tobacco/bat ... /11461.txt