Potassium humate was extracted from brown coal. A novel super absorbent composite, poly (acrylic acid-co-acryla-mide)/potassium humate (PAA-AM/KHA), was prepare
With the increase in mining depth many mining areas in China have entered a period necessitating mining above aquifers.Production safety in coal mines in northe
<正>The 6th International Conference on Mining Science and Technology (ICMST), sponsored by China University of Mining and Technology, will take place in Xuzhou