in the reported experiments, protective clothing against heat and flames has been evaluated for flame-resistance and also for protection against various heat exposures from convection, radiation, and conduction sources, depending on the end-use , to ensure a realistic assessment of the potential protection offered and required. evaluations of various flame-resist-treated fabrics to different heat exposures showed that the fiber and the flame-retardant finish should preferably form a well-developed char on exposure to heat, without softening and melting. aluminized fabrics are essential for protection against radiant heat, and the aluminization technique affects heat transfer/significantly. a low-density base fabric reduces heat transfer in this case. for protection against conduction, such as from molten aluminum splashes, the fabric should have a smooth surface, high density and thickness, besides the other previously-mentioned basic requirements. of the fabrics evaluated, zirpro wool of adequate construction for the end-use required offered one of the best protections in the various heat-exposure tests. 33 refs