The Hoeryà Âng T'an'gwang Line (Hoeryà Âng Colliery Line) is a non-electrified standard-gauge freight-only secondary line of the Korean State Railway in North Korea, running from Hoeryà Âng Ch'à Ângnyà Ân on the Hambuk Line to Yusà Ân.
The Tomun Railway, which had completed its mainline from Hoeryà Âng to Tonggwanjin on 1 November 1924, expanded its network in order to serve the collieries around Hoeryà Âng by building a branchline from Hoeryà Âng to Kyerim, which was opened for service on 11 August 1928.
Less than a year later, on 1 April 1929 the Tomun Railway was nationalised and absorbed by the Chosen Government Railway (Sentetsu). Sentetsu continued to operate the line, and then further expanded it with the addition of a extension to Singyerim; this extension was opened on 21 December 1932, but was subsequently closed.
The line has changed hands several times since its construction. Following the absorption of the Tomun Railway by Sentetsu in 1929, on 1 October 1933 the Hoeryà Âng Colliery Line, along with the rest of Sentetsu's Tomun Line to Unggi, were transferred to the South Manchuria Railway (Mantetsu). Mantetsu took over the management, operation and maintenance of these lines, until finally on 1 July 1940 it was transferred back to Sentetsu.
Following the partition of Korea, all railways located in the Soviet zone of occupation, including the Hoeryà Âng Colliery Line, were nationalised by the Provisional PeopleâÂÂs Committee for North Korea on 10 August 1946, and following the establishment of North Korea, the Korean State Railway was created. At some point, the stations at Yà Ângsu and Pongà Âi were closed, and Kyerim station was renamed Yusà Ân.
Coal is shipped from mines on this line to the Kim Chaek Iron & Steel Complex at Kimchaek and the Ch'à Ângjin Steel Works in Ch'à Ângjin, with the order of collection from each line arranged in the order of the total weight of the outbound cars. This line also serves the Hoeryà Âng Tobacco Factory located near the former station of Yà Ângsu.
A yellow background in the "Distance" box indicates that section of the line is not electrified.