CARBONIFEROUS AND PERMIAN PLANTS OF CHINA PROVINCE GANSU
Locality:
Gansu lokal 1
In the area of Luanxian. The material from Chao-ko-chuang is separated by collector and year into different sites. Chao-ko-chuang was one of the many coal mines in Kaiping basin, run by the Kailan Mining Administration (K.M.A.) in the first half of 20th century.