Miners are finished extracting coal here, and the sides of the tunnel have been sprayed with quicklime to suppress explosive coal dust. 礦工們已經完成了這裡的煤炭開採，坑道兩壁都噴上了生石灰以防止煤塵爆炸。
The trial and industrial practice demonstrate that blast furnace pulverizing coal injection lead extraction process is successful and effective. 試驗和工業實踐證明，鼓風爐粉煤噴吹煉鉛工藝是成功有效的。
The technology of coal powder spurted burning is applied in the annealing furnace for low carbon steel wire heated with coal powder. 煤粉加熱低碳鋼絲退火爐採用粉煤噴射燃燒技術，節能效果顯著，環境污染有所改善，是值得推廣的爐型。
