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Thomas Midgley





CAREER

Midgley graduated from Cornell University in 1911 with a degree in mechanical engineering.
While working for General Motors , he discovered that leaded gasoline prevented Internal Combustion engines from "knocking" . The subsequent addition of lead to billions of gallons of gasoline eventually spewed huge amounts of lead into the atmosphere, causing health problems around the world. Workers producing the additive were even more greatly affected. In 1924 , Midgley took a prolonged vacation to cure himself of Lead Poisoning — a fact he deliberately kept secret, holding a press conference to demonstrate the "safety" of contact with the substance. In this demonstration, he poured tetra-ethyl lead over his hands, then placed a bottle of the chemical over his nose and breathed it in for sixty seconds, declaring all the while that he could do this every day without succumbing to any problems whatsoever.

Eventually, he repented of lead (privately, at least), and invented CFC s as a grand apology to the world, and after hearing about people suffocating from gas leaks from refrigerators.

Thomas Midgley Jr. held more than 170 patents. At 51, he contracted Polio , which left him severely disabled. This led him to devise an elaborate system of strings and pulleys to lift him from bed. In what must be one of the most ironic deaths in the history of science, Midgley was accidentally entangled in the ropes of this device and died of strangulation at the age of 55. Many find it hard to believe that such a qualified mechanical engineer could make such a mistake, and have labeled his death as a suicide. Midgley died believing that CFCs were of great benefit to the world, and a great invention indeed.


AFTERMATH

CFCs replaced the various Toxic or Explosive substances previously used as the working fluid in Heat Pumps and Refrigerators . CFCs were also used as propellants in Aerosol Spray cans, metered dose inhalers ( Asthma Inhalers ), and more.

The Montreal Protocol forbade major countries to produce CFCs, and their production is set to cease on the rest of the planet by 2010 . Health services and pharmacological companies have been replacing these inhalers with devices that do not contain CFCs. Unfortunately, CFC-based heat-pumps are significantly more efficient than any of their environmentally safe alternatives (which use Alkanes and HFCs, for example), providing great incentive for those who refuse to believe the environmental danger of CFCs to resist the banning of the substances. It has also been suggested that there is a serious loophole in the current ban in production, in that affected countries can still import and use CFCs manufactured in other countries outside the legislation.


REFERENCES

Book: '' A Short History Of Nearly Everything '',
:By Bill Bryson (Author), ISBN 0385660049
http://www.invent.org/hall_of_fame/193.html

Article: Secret History of Lead, The Nation March 20, 2002