Spatial and temporal distribution of dust pollutants from a fully mechanized mining face under the improved air-curtain system. - Gui, Changgeng; Geng, Fan; Tang, Junhua; Niu, Hongwei; Liu, Chun; Teng, Haixu; Feng, Xinyue; Hu, Shuda; Li, Shihang (Powder Technology, 2022)