The heart of the flake graphite extracting and concentrating process is the flotation cells. Air combined with flotation reagents in the cells form a froth. The graphite flakes, which are held by the froth, are swept mechanically into a trough which them carries them on to additional concentrating and, finally, drying operations.
The Shiheung Crystalline Graphite Mill has a well-equipped analytical and ore dressing laboratory. Here, Mr. Un Hong Cha of the laboratory staff and Mr. L. G. Nonini, an American mining engineer engaged by United Nations Korean Reconstruction Agency (UNKRA) as advisor to the mill for the initial operational period, carry out an ore dressing test using a small-scale flotation cell.
Raw ore for the Shiheung Crystalline Graphite Mill is scraped from surface deposits by slushers. Hills in the vicinity of the mill contain an estimated 20,000,000 metric tons of ore easily available for processing.
Large-scale production of quality-grade flake crystalline graphite with a carbon content ranging between 87 and 90 percent started in the Republic of Korea in January 1959 at this modern new mill. The mill was built jointly by the United Nations Korean Reconstruction Agency (UNKRA), The Republic of Korea Government and the Shiheung Crystalline Graphite Mining Company of Seoul, which is the end user. Raw ore for the mill is now being mined from surface deposits which covered the hill on the left. The buildings to the right of the picture belong to a small, out-moded mill which turned out a low-grade product.
One of the six operating rooms at the new $4.4 million National Medical Center in Seoul, Korea. The Center, which was dedicated on 2 October 1958, was established through the United Nations Korean Reconstruction Agency (UNKRA) aid program under a project carried out jointly by UNKRA, the Korean Government and the Governments of Denmark, Norway and Sweden.
