How Asbestus Is Manufactured

The asbestos bearing rock is usually somo kind of a gre:i serpentine, and in WOl'king it is first crushed iu special machines, so as not to destroy the fiber. The long fiber is shaken, carded and spun, much like cottou and wool, into yar::s, tapes and cloths. In the rubber department it is proofed and made into sheeting, tapes and rings for Bteam and other joints or into cloth and millboard. A special kind of packing for high pressure cylinders, kuown as metallic cloth, is made by weaving togetber brass wire and asbestus, and is used in many riñe enRines.