5月23日，山西通洲集团留神峪煤矿瓦斯爆炸事故救援指挥部召开新闻发布会：事故现场有毒有害气体长时间超限，存在发生次生灾害风险。

Full article body is being fetched in the background. Refresh in a moment to see the complete paragraphs. For now this page shows a summary and AI analysis.