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    Use of eight of the nine are mandatory in the U S , the exception being the environmental pictogram (see below) Each pictogram covers a specific type of hazard and is designed to be immediately recognizable to anyone handling hazardous material
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    NOTE: Appendix C, Section C 2 3 1 of 29 CFR 1910 1200 states the following: Pictograms shall be in the shape of a square set at a point and shall include a black hazard symbol on a white background with a red frame sufficiently wide to be clearly visible
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