The open-pit mine supplying the Hwanghae Iron and Steel Complex with iron ore was once harassed by myriads of earth-scraping piled up on iron ore seams.

Acquainting himself with the problem, General Secretary Kim Jong Il unfolded a bold and large-scale plan to remove earth-scraping with a belt conveyor.

Under his wise guidance the belt conveyor stretched about 4,600 meters from Lagoon Kumsan to Nunggum Islet in Juche 64 (1975) as the first stage of the project.

Over the past 35 years it has carried 40 million tons of earth to the sea, linking the mainland with islets.

It has also saved much manpower, materials and equipment which had been needed for earth removal.

The earth transported by the belt conveyor was used to build a ten-odd-km-long dike from Lagoon Kumsan to Wolsa-ri, Kwail County via Nunggum, Ung and Chongryang Islets and reclaim more than 3,500 hectares of tideland for agricultural production.

Now the belt conveyor has changed its direction toward Jui Islet from Nunggum Islet.

The dike has more than 1.3 million trees of several dozen species growing in over 150 hectares. A ring road was also built on it.

Many animals and birds such as pheasant, roe deer, hare, raccoon dog and cuckoo live there.