Just read something written by one of my relatives, who was a very significant labor leader from years past. He claimed that in order to create costly problems for "management", mob-controlled union members would (among many other tactics) pour powdered graphite into the oil of machinery...which would quickly seize up and shut down the production line or whatever they wished to harm. This type of thing (along with many other tricks) create big costs for management. I've mever heard of anything like this. Has anyone? Would that even work? Maybe really large particle size? We've all heard the old "sugar in the gas tank" trick (which doesn't really work).....but I never heard of this, but just remembered something my labor leader relative once said (he is bigger than Jimmy Hoffa).