The 19th also dated the establishment of the Supply Regulating Station at Hagaru for the purpose of building up stockpiles. Prior to this time, the 1st Service and 1st Ordnance Battalions had been in charge of division dumps at Hamhung. Supplies arrived by rail after being unloaded from the ships at Wonsan by the 1st Shore Party Battalion and the 1st Combat Service Group. The completion of mine clearance made it possible to order the latter organization to Hungnam by sea to operate in-transit depots for X Corps. Practically all Division supplies were soon being received by sea at this port, where the 1st Combat Service Group separated the incoming cargo into proper classifications and forwarded it to the dumps at Hamhung. Port operation was the responsibility of the 2d Engineer Special Brigade, USA. After the project got into full swing, from 2000 to 2500 Korean laborers were employed at Hungnam and as many as 6000 tons of cargo unloaded in 24 hours.[338] [338] Kenneth W. Condit, “Marine Supply in Korea,” _Marine Corps Gazette_, xxxvii, no. 1 (Jan 53), 53–54. A limited amount of rolling stock was available for the narrow-gauge railway from Hungnam to Chinhung-ni. But it was up to the Marines to put the line back into operation, for the X Corps Railway Transportation Section already had its hands full with the Wonsan-Hamhung route. The 1st Service Battalion was authorized to make the attempt, and enough Korean crews were rounded up to operate the trains. Chinhung-ni thus became the railhead for supplies tracked the rest of the way to Hagaru.[339] [339] _Ibid._ Preparations were also made for large-scale casualty evacuation to the Division hospital at Hungnam. H&S, A and B Companies of the 1st Medical Battalion remained there to set up the Division hospital while D, C and E Companies were attached to RCTs 1, 5 and 7 respectively. As the Division center of gravity shifted northward, medical officers foresaw the need of a hospital-type facility at Hagaru in addition to the clearing stations contemplated at Koto-ri and Chinhung-ni. Plans were approved, therefore, for Companies C and E to pool their resources at Hagaru and establish a medical supply dump. Additional surgical teams were to be flown to Hagaru in an emergency by Companies A and B from the hospital at Hungnam. Meanwhile the hospital ship _Consolation_, commanded by Captain John W. McElroy, USNR, prepared to move from Wonsan to Hungnam. There the Division hospital had been enlarged to 400 beds, and an additional 100 to 150 were planned for the new annex at Hamhung. In order to speed up casualty evacuation, several heated railway cars were equipped for that purpose on the 35-mile narrow-gauge line from Chinhung-ni.[340] [340] CG 1stMarDiv msg to Subordinate Units, 2345 20 Nov 50; 1stMarDiv _SAR_, annex HH (hereafter 1stMedBn _SAR_), 4–7. _Supplies Trucked to Hagaru_