Masan Ammunition Depot
Masan is about 35 miles west of Pusan. The facility at Masan was the site of a former Japanese ammunition depot with an airstrip. It had been selected because it was close to the action, had a 2,600-foot grass and concrete runway (already being used by a combined US-ROK Air Force training squadron), and included a pair of completed hangars with a third under construction.
Masan was also located just across the bay from the Chinhae Naval Base and was a major road and rail hub in South Korea. Supplies could therefore be quickly unloaded from ships docking at Chinhae and then loaded onto trucks or trains for further distribution. Masan was the the southern starting point for the MSR 4 roadway linking Masan and Chunchon by way of Taegu. It was also along MSR 6 which ran along the ROK's southern coastline. The rail lines originating at Masan had been laid by the Japanese during the colonial period. These lines connected to Seoul and to Sinuiju in North Korea, where they were linked with the Trans-Siberian Railway. The railroad network was badly damaged during the Korean War, but it was later rebuilt and improved.
During the war the haul from Masan to Chongju and back was 460 miles, and the turnaround took approximately 36 hours. In May 1955 the 142nd Quartermaster Battalion was moved from Masan and assumed the mission of providing Quartermaster support to US/UN Forces in the Southern area plus Class I perishable support for all US Forces in Korea.
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