California tightens rules on worker exposure to poisonous lead. 'The evidence is undeniable.'
Briefly

The evidence is undeniable that even small levels of exposure can have very, very serious effects.
Failing to act on that scientific evidence until now "means that an unknown number of lead-exposed workers have died early from heart disease" or suffered other harm, said Barbara Materna, former chief of occupational health at the California Department of Public Health.
The new standards are intended to keep lead levels in the blood below 10 micrograms per deciliter, rather than their previously stated target of 40 micrograms, according to Cal/OSHA.
Read at Los Angeles Times
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