Asbestos roof shingles became popular in the beginning of the 20th-century for their durability and incombustibility. The material was eventually linked to a number of cancers, however. While an asbestos roof in good condition is not considered dangerous, a threat is posed when asbestos becomes unsettled and is breathed in. | Source: Cleveland State University Library Special CollectionsDownload Original File
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Cleveland State University Library Special Collections
