A project led by CCTEG Mining Research Institute Co., Ltd., in collaboration with Tiandi Science and Technology Co., Ltd. and CCTEG (Xi'an) Mining Engineering Technology Co., Ltd., has achieved significant progress in developing a complete set of technologies and equipment for surface fracturing of thick and hard coal mine roofs to prevent dynamic pressure disasters, the Science and Technology Daily reported. The project successfully developed China's first specialized surface fracturing skid-mounted equipment for coal mines, providing a systematic solution for preventing strong mine pressure, rock bursts and mine seismic disasters.