| Lead-history |
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| • | Toxic effects
have been known for centuries |
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| • | Paint known to be
a poison in household |
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| paint as far back
as late 1800’s |
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| – | Seven countries
band lead paint in 1922 |
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| • | 1920s: added to
gasoline (tetraethyl lead) |
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| • | Industry fought
public health efforts to |
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| cease the
ubiquitous use of lead |
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