THE EMPLOYEE WAS ONLY HANDLING TOOLS TO ANOTHER EMPLOYEE AS A CONVEYOR BELT WAS BEING SPLICED BACK TOGETHER. IT WAS WARM & HUMID ON THIS DAY, BUT NOTHING OUT OF THE ORDINARY. EE BEGAN TO LOOK PALE AND WAS SWEATING MORE THAN USUAL. CO-WORKER FELT HIS PULSE IT WAS RACING. HE TOOK HIM TO MEDICAL CENTER. STRESS TEST & CATHERIZATION DETERMINED THAT HE HAD BLOCKAGE RESULTING IN SURGERY.