model of what ?? MT @sandykjohnson: More than 80 workers have died since 2000 at sites OSHA named "model workplaces" http://ow.ly/7jmTh
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model of what ?? MT @sandykjohnson: More than 80 workers have died since 2000 at sites OSHA named "model workplaces" http://ow.ly/7jmTh