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Hallein Salt Mine
The Hallein Salt Mine, also known as ''Salzbergwerk Dürrnberg'', is an underground salt mine located in the Dürrnberg plateau above Hallein, Austria. The mine has been worked for over 7,000 years since the time of the Celtic tribes and earlier. It helped ensure nearby Salzburg would become a powerful trading community. Since World War I, it has served as a mining museum, known for its long wooden slides between levels.
==Description==
There are several named tunnels in the mine, including the Obersteinberg opened in 1450, the Untersteinberg, the Jackobberg, the Rupertsberg, the Wolf Deitrich tunnel and the Dr. Nusko tunnels. They descend all of the way to Hallein.〔
Early mining was done by hand and extracted salt rock crystals as a solid. To improve efficiency, fresh water would be pumped into a cavern. After several weeks of absorbing salt from the walls, the water was pumped out to a processing plant in Hallein.〔
In 1829, the Bavarian–Austrian Salt Treaty was created, as the mine actually crosses under the border into Bavaria. The treaty stipulates that up to ninety Bavarian farmers are allowed to work in the mine.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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