JTF‑Ⅳ is designed to prevent coal spontaneous combustion in goafs and abandoned roadways. Composed of Materials A and B, it forms ...

JTF‑Ⅱ targets coal spontaneous combustion in roadways, support tops and air leakage at upper and lower corners. Materials A and B ...

JTF-I uses microcapsule technology to overcome drawbacks of traditional mine fire control methods. Its gelling material is activat...