http://pastport.jp/user/ygequip/timeline/YG%20Dust%20Suppression%20System%20in%20Coal%20Plant Dust is generated during many steps in the conduct of mining operations. For example, perforation operations, blasting operations, crushing operations, screening, transportation, etc. will generate dust. https://yugongengineering.com/2023/01/04/dust-supp ja-JP