辽宁海州露天矿治理取得阶段性进展

Group 1 - The Haizhou open-pit mine in Fuxin, Liaoning Province, has undergone comprehensive remediation, stabilizing its slopes as part of ongoing ecological restoration efforts [1] - The mine, a key project from China's First Five-Year Plan, has produced a total of 244 million tons of coal from its opening in 1953 until its closure in 2005 due to resource depletion [1] - The mine's dimensions are approximately 3.9 kilometers in length, 1.9 kilometers in width, and 350 meters in depth, with long-term high-intensity mining leading to significant ecological and disaster-related issues [1] Group 2 - The mine's underground residual coal self-ignition has caused surface temperatures to reach 400-500 degrees Celsius, complicating remediation efforts [1] - Research teams are employing methods such as drilling and injecting carbon dioxide to reduce surface temperatures before proceeding with restoration work [1] - The Fuxin Natural Resources Bureau reported that over the past three years, 3,493 acres of land have been restored, with increasing wildlife sightings indicating ecological improvement [1] Group 3 - The Haizhou Open-Pit Mine Historical Museum reopened to the public, featuring historical artifacts including a 1960 five-yuan banknote depicting a large electric pick operation at the mine [2] - Former miner Ma Yumin, who worked at the site for 27 years, expressed optimism about the land's revival after facing geological and ecological challenges [2]