FROM APPROX 8:30 AM-11:45 AM EE CLEARED OVER SPILL STONE FROM WALK WAY AT #57 BIN AT THE PUG MILL. USING A STD HAND SHOVEL. TOOK A BREAK AT 11:45 WENT TO QUALITY CONTROL LAB TO REST AND DRINK WATER. WHILE IN THE LAB, HEATED LUNCH IN MICROWAVE. WHILE EATING LUNCH IN LAB HAD HEART ATTACK. CALLED FOREMAN WHO CALLED 911. CLEARBROOK RESCUERESPONDED.