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On Älgön there are three mining claims:
Hökkulls Mine claim – 2 pits
Reinhold Mine claim – 4 pits
Älgö Mine claim – 2 pits
Stora Älgö Mine claim registered on 20 September 1872.
Owners: Persbergs Gruve AB (½) and Mölnbacka Trysils AB (½)
1848–1871: A total of 3,529 tons of ore was extracted on the island.
1851: Eastern Älgö Mine, located on Älgön, was worked this year. The ore vein was considered fairly clean and attractive.
1852: Poor-quality ore was extracted, so the mine was likely to be abandoned soon.
Source: Transcription from historical mining reports.