2012年7月14日土曜日

Application of Built Up Asbestos Roofing 1930

Until the 1980s in the US, asbestos was a popular material in industrial, commercial and construction applications. Asbestos typically found its way into homes and workplaces during construction or renovation, when asbestos-containing products such as floor tiles or roofing felt were installed. These products remained popular for many decades because they were cheap, made from easily-acquired materials and minerals, and had beneficial fire-retardant properties.

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