At the rainy season of a year President Kim Il Sung inspected the processing site of a fishery station.
Appreciating the quick workmanship of processing workers, the President went up to see a tall tank filled with salted mackerels and moved his steps to the sewer.
The President picked up a liver from fish bowels which flew down and let officials know about proportion of bowel in the mackerel. And then, he told that if all the bowels were processed without any waste, it would then be equivalent to catching a little more than 25,000 tons of fishes in 100,000 tons of mackerels.
The President went up to a heap of fish jowls and picked up again a mackerel jowl and its spawns mingled with blood and asked the general manager why they threw away such good spawns.
Officials could not know how to give an answer to the President since he worried so much, feeling as if delight to be given to the people would be less.
That day the President instructed them to process spawns and livers and to supply them to the people and send rest of bowels and washings of fishes to the farms for fertilizers.
