2Analysis on Individual Particulate of Iron and Steel Plant Dust by Secondary IonMass Spectroscope4-7
5Study on Distribution Law of Leaked Air and Oxygen Content in the Gob of Fully Mechanized Coal Face with Caving Mining12-13,16
7Test of Improving Gas Pre- drainage Effect from Cross- seam Holes by Hole Enlargement with Water Jet17-18
14Spraying Urethane Foam for Blocking Air Leakage in the Area of Roadway Roof- fall in Wangcun Coal Mine33-34
17Application of Comprehensive Three- dimensional Exploration in Mine Water Prevention and Control40,43