자강도
Most of the coal traffic from Kujang towards Sunch'ŏn supplies Chagang Province with fuel; in the other direction, from Kujang towards Manp'o, coal shipped on the line is for local use for heating, and for large factories at Ch'agap'yŏng and Mun'ak on the Pukpu Line. 58% of all freight traffic between Kanggye and Manp'o is wood.