The project titled “Research, Development, and Application of Key Technologies and Equipment for High-Efficiency Longwall Mining Using Pure Water Hydraulic Supports on Ultra-Long Faces”, submitted by Zhangjiakou Mining Machinery Co., Ltd., a subsidiary of China National Coal Group, has been awarded the First Prize of the Liaoning Provincial Science and Technology Progress Award. This achievement enables intelligent, ultra-long-distance scraper conveyors to operate in coordinated synergy with pure-water-powered hydraulic roof supports, significantly advancing coal mining toward greener, cleaner, more efficient, economically viable, and safer intelligent operations.

— Zhangjiakou Mining Machinery Co., Ltd.