节点：上游（原材料/资源端）位置：上游情绪：中性参考度：2/10
波兰焦煤生产商亚斯特泽布斯卡煤炭公司（JSW）宣布，其普尼奥韦克地下煤矿已完成一项重大战略项目，将III号井筒从856米加深至1053米，并启用了新的1000米水平。这一进展标志着该煤矿在安全、物流和运营效率方面的重要里程碑。
该加深项目始于2020年，还包括对III号井筒东西两段的提升设备进行现代化改造，以服务新水平。III号井筒直径7.5米，具备通风、人员下放及物料运输等多种功能。项目完成后，该井筒现服务三...
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