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2006-08-06 00:42:02 · 2 answers · asked by Anonymous in Science & Mathematics Engineering

2 answers

Yes, ANSI Z535.4-1991

2006-08-08 01:10:23 · answer #1 · answered by Trecton M 2 · 0 0

Hell I bet they do they seem to have rules about everything else

2006-08-06 07:47:59 · answer #2 · answered by southforty1961 3 · 0 0

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