Since the late 1800's Asbestos has been mined and used commercially. The use of
Asbestos dramatically increased during World War II and since the early 1940's
millions of Americans have been exposed to asbestos dust working within
industries where initally the risks were not known. There has been widespread
exposure to Asbestos by workers within shipyards, mines and mills, producers of
asbestos products, workers in the heating and construction industries, and other
tradespeople and an increase risk of deveolping mesothelioma has been the
result. .

Today, the U.S. Occupational Safety and Health Administration (OSHA) sets
limits for acceptable levels of asbestos exposure in the workplace. By contrast,
the British Government's Health and Safety executive (HSE) states formally that
any threshold for mesothelioma must be at a very low level and it is widely
agreed that if any such threshold does exists at all, then it cannot currently
be quantified. For practical purposes, therefore, HSE does not assume that any
such threshold exists. People who work with asbestos wear personal protective
equipment to lower their risk of exposure.

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