3General description of the design of underground mining system of Jining No.3 mineGuo XiaoPing, Fu Xiaomin10-12
5Loading and unloading system and the auxiliary facilities in the main shaft of Jining No.3 mineLi Baoxuan, Liu Xianyi24-25
6Discussion on establishing the updated enterprise system for coal survey and design organization32-33
7Introduction of the design concept for the "residential city of science and education"in LanzhouXiao Jinsuo34-35
8Technological study of the compressed - air chock support for small - scale coalmineYu Kaiqing, Yao Qinghan40-42