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I have worked in a plant where I had half a critical mass in this hand, barehanded and dressed in street clothes, and half in this hand, wearing a lab coat

So they were only wearing a lab coat on one half of their body? I'm confused.

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Or maybe they had three hands, they're only mentioning two of them, and the lab coat is intact

One lab coat, one pair of jeans. Half core in lab coat pocket, half core in jeans pocket, to prevent the lab coat pockets from coming into contact if they were in opposite pockets of the lab coat.

Safety first!

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