瑞海矿业：一重点贯通工程顺利完成项目建设取得关键性突破

Core Viewpoint - The successful completion of the No. 2 auxiliary slope road marks a significant milestone in the construction of the Ruihai Mining project, enhancing the overall project progress and addressing critical issues related to ventilation and transportation underground [1][4]. Group 1: Project Milestones - The No. 2 auxiliary slope road, with a length of 1285 meters, plays a crucial role in deep ventilation, transportation, and emergency exits, serving as a vital artery for underground operations [3]. - The construction team achieved an average progress rate of 150 meters per month, completing the project in 8.5 months, which is 1.5 months ahead of the original schedule [3]. Group 2: Strategic Importance - The completion of the No. 2 auxiliary slope road significantly improves the ventilation system, enhances the working environment, and adds safety exits at the -1300m and -1480m levels, thereby increasing the safety of underground workers [4]. - The transportation system for waste rock has been optimized, leading to over a 40% increase in transportation efficiency, which provides a solid foundation for future production and mining activities [4]. - The successful connection of the No. 2 auxiliary slope road to the -1480m first mining section paves the way for accelerating the project development process and signifies the full connectivity of the underground engineering from shallow to deep sections [4].