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Careers / Construction Laborers and Helpers |
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Table of Contents |
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Interesting Fact |
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In the 18th and 19th century, hatmakers used poisionous chemicals including mercury in their work. As result, many developed pathological symptons -- an estimated 10% went insane. Hence the term "mad as a hatter" and Lewis Carroll's character, the Mad Hatter. |
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Did you know... |
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The MyPlan.com Complete Test Package gives you access to all our renowned assessment tests for only $19.95! |
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