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Black Asbestos Cement Lab Countertop | by Asbestorama
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Black Asbestos Cement Lab Countertop

Example of black asbestos-cement laboratory countertop. Often mistaken as "slate" or granite; this material demonstrates its fibrous nature at a small, localized area of damage shown in the detailed inset image. This fibrous cement material is also sometimes referred to as "Transite" (a former proprietary brand tradename by Johns-Manville).

 

Also found in several other colors, but black being the most common in many laboratories and workrooms inside schools, colleges, and commercial & governmental testing organizations. Not uncommon to find graffiti carved into the counter surfaces in high school settings or to find localized areas of excessive wear from long-term repetitive contact which can degrade the surface and expose the asbestos fibers.

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Taken sometime in 2009