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Hazardous substances in cultural heritage collections
A hazardous substance in cultural heritage collections is any substance that may cause harm to museum workers, visitors, and heritage collections. Hazardous substances can be found within heritage objects and within the heritage workspace as part of the materials used in preservation and conservation of heritage collections.

Types of hazardous substances in heritage collections
Types of hazardous substances found in heritage collections can include mechanical, electrical, thermal, radioactive and chemical.