Guidelines for the Safe Use of Art and Craft Materials http://www.oehha.ca.gov/education/art/artguide.html
(OEHHA)
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Art and craft supplies that contain toxic substances, including potential human carcinogens, pose a significant danger to the health and safety of schoolchildren. Art instruction is part of the standard school curriculum, and as a result, many children may be exposed to toxic chemicals in the materials used.
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