, composed of silicate of mag- of that material. From Fig. 2, which is a section of the from Fig. 4, which shows both a boiler and a portion of a nesia, silicate of lime and protoxide of iron, and manga- asbestos roofing, its construction will be understood. F isa steam pipe, covered, F being the… … The material is obtained from the mines in forms ranging A FINE PIECE OF ASBESTOS. of the asbestos are securely covered by a thin braid, forming from bundles of soft silky fibers to hard blocks. The blocks waterproof composition into which asbestos enters. C isa ropes from three eighths to two…
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