Show 1 cork cork is one of the most difficult of substances to pulverize because its elasticity prevents crushing and it quickly dulls the edge of a knife the only method found thus tar far for powdering derl it is by means of a machine in which it is torn apart on an saw toothed bars bam even these need frequent sharpening benj tile the powdered cork la Is very light remains in the air for a long time and when in this condition Is extremely U explosive one who has handled it states that dynamite is much safer to handle in bulk than ground cork |