A worker is silhouetted in an access tunnel during the installation of railway equipment in Erstfeld, Switzerland.

一个工人的轮廓在瑞士斯特·费尔德市火车隧道入口安装铁轨设备。

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The local citizens and activists of Coal River mountain Watch want Massey Energy to return to tunnel mining and use the mountaintop for a wind installation.

当地居民和“Coal River山看护者”的活动家们试图让Masey Energy公司重新使用隧道采矿法，并且利用山顶建造风电。

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Installation site: tunnel, chamber.

安装地点巷道、硐室照明。

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At over a mile long, the Combe Down tunnel will be the longest cycling tunnel in Britain and will feature an interactive light and sound installation.

BBC: Bath's Two Tunnels Greenway cycle path opens