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long but very interesting COMMENTARY: Overexposure to manganese has caused Parkinson's-like symptoms for thousands of welders. So why does the welding industry still get a free chemical pass? http://www.motherjones.com/commentary/columns/2008/07/witness-smoke-and-mirrors.html ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn