Laddar...
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1852: A new shaft in the southern field encountered loose, decaying ore. The shaft collapsed due to weak timbering.
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1852–1856: The mine remained inactive. At the end of 1856, a new shaft was started southeast of the previous shafts, at a cost of 20,815 SEK 68 öre. Over the next two years, the shaft was driven 38 m to breakthrough with the underlying Hagbergsort of the old mine.
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1860s: Ore extraction resumed, and the mine became one of the most productive in the Persberg field.
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1865: Quartzite entered the bottom, depleting the ore. Work continued in the southeast gable, where an ore outcrop of limited height but large field extent was found.
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1873: Water shortages for the pumping works led to the mine’s closure; it has remained inactive since.
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Ore analysis:
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Primary ore: 54–61 % pig iron
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Secondary ore: 42–51 % pig iron
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Persberg, February 1887
P. Öberg, Acting Mining Engineer, Western District
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