| http://www.w3.org/ns/prov#value | - The first zone of the furnace was about 6 long, the entry temperature being about 100 C. and its hottest point being about 550 C. In this zone, the pile was pre-fired to remove water and other volatile material such as solvents, decomposed organic material, and initiate the sintering of the strand of fibers, the strand first turning brown, then black, then white again as the carbonaceous material
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