[Jewelry making - Article 00420] - Re: [Orchid] Silicosis and quenching

[Karen Goeller]

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John,

    The issue with silicosis is not that the lungs can't expel it.
    You're quite right about that, although it's common for our lungs
    over time to accumulate a bunch of "stuff" that never quite gets
    expelled. (Ever see Body Worlds?) 

    Rather, the problem with crystalline silica is that it is extremely
    sharp. Inhaling it scratches the very delicate lining of the lungs,
    which leads to scar tissue forming. The scar tissue decreases both
    the flexibility of the lung and its ability to pass oxygen into the
    capillaries and blood vessels (which can also be scarred and
    damaged). 

    Having seen my grandfather and aunt die of emphysema/COPD, I know
    what an agonizing and horrible disease it can be. It's also worth
    taking seriously. If basic safety precautions in the lab can help
    minimize the scarring in my own lungs that could contribute to it,
    then it's worth the extra effort. Our lab at school is not a
    controlled environment like that of a "personal" lab - students are
    inexperienced at mixing investment safely so it gets all over, and
    the quench setup is far from ideal. It's not fear-mongering to say
    that a few relatively simple changes in our setup and safety training
    can help all of us decrease exposure to a potentially harmful
    irritant, and I appreciate the papers and references that have been
    cited throughout this discussion, which have helped me make a more
    informed choice about my own health. 

Karen Goeller
No Limitations Designs
Hand-made, one-of-a-kind jewelry
www.nolimitations.com
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