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Photo 6127 or 6132
S-0526-0358-0003-00025 · Item · 1960-12-31
Part of United Nations Korean Reconstruction Agency (UNKRA) (1950-1958)

New techniques and modern safety measures have come in the wake of mining machinery and equipment imported by the United Nations Korean Reconstruction Agency (UNKRA) under its $13,361,000 programme for the rehabilitation of Korean coal and metal mines. As a consequence, production in the Government-owned Dai Han group of coal mines has surpassed the target figures set in the five year production plan, having risen from an annual output of 667,631 tons in 1954 to over 1,520,000 tons in 1957. Here, in the mine of the Dai Han group, a workman operates one of the Holman compressed-air drills, nicknamed the Jumbo Rig, imported by UNKRA. Using heavy jack drills and equipped with hydraulically-operated telescopic arms, it has a penetration speed of four feet per minute.