The Kowŏn T'an'gwang Line, or Kowŏn Colliery Line, is an electrified secondary line of the Korean State Railway in Sudong District, South Hamgyŏng Province, North Korea, running from Tunjŏn on the P'yŏngra Line to Changdong.^[1]

Quick Facts Kowŏn Colliery Line, Overview ...

Kowŏn Colliery Line
Overview
Native name	고원탄광선(高原炭鑛線)
Status	Operational
Owner	Korean State Railway
Locale	Sudong-gu, South Hamgyŏng
Termini	Tunjŏn Changdong
Stations	4
Service
Type	Heavy rail, Freight rail Regional rail
Operator(s)	Korean State Railway
Technical
Line length	17.6 km (10.9 mi)
Number of tracks	Single track
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	3000 V DC Overhead line
Route map Legend P'yŏngra Line to Rajin 0.0 Tunjŏn P'yŏngra Line to P'yŏngyang (tunnel appx 410 m (1,350 ft)) (tunnel appx 320 m (1,050 ft)) (tunnel appx 380 m (1,250 ft)) 7.8 Sudong (bridge appx 120 m (390 ft)) 11.7 Tŏksa (bridge appx 35 m (115 ft)) (bridge appx 25 m (82 ft)) (bridge appx 20 m (66 ft)) (bridge appx 30 m (98 ft)) (bridge appx 25 m (82 ft)) (bridge appx 25 m (82 ft)) (bridge appx 35 m (115 ft)) coal mine (bridge appx 30 m (98 ft)) (tunnel appx 100 m (330 ft)) (bridge appx 30 m (98 ft)) (tunnel appx 85 m (279 ft)) (bridge appx 30 m (98 ft)) (bridge appx 25 m (82 ft)) (bridge appx 30 m (98 ft)) (bridge appx 25 m (82 ft)) (bridge appx 25 m (82 ft)) (bridge appx 25 m (82 ft)) (bridge appx 30 m (98 ft)) (bridge appx 20 m (66 ft)) Kowŏn Colliery 17.6 Changdong mine railway

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A yellow background in the "Distance" box indicates that section of the line is not electrified.