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Question
90. Interlocked barrier guards are similar to "gates" but somewhat different. Explain this difference. Also, explain the difference between "Type A" and "Type B" gates. Comment on the legality of hand feeding of punch presses with each of these three devices (interlocked barrier guards, Type A gates, and Type B gates).Answer
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UEL: 7.8%
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LEL: 1.5%
UEL: 7.8%
VAPOR DENSITY: 2.48
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