Ytterby

Except for the winter months, passenger ships of the Waxholmsbolaget call at a pier in Ytterby, providing a connection to Vaxholm town and Stockholm.

Towards the end of the 1940s, the Swedish state, through the REF (Riksnämnden för ekonomisk försvarsberedskap) became interested in the possible usage of the mine.

[9] The mine's elemental history began in 1787, when Lieutenant Carl Axel Arrhenius found an unidentified black mineral.

[8] His hobby interest in chemistry led him to notice the unusually heavy black rock, which he and his friend Bengt Geijer examined with Sven Rinman.

It was not until 1794 that Finnish chemist Johan Gadolin fully analysed the mineral and found that 38% of its composition was a new, unidentified earth element.

[12] The transition metal tantalum (Ta, after the Greek mythological figure Tantalus) was also discovered in a mineral sample from Ytterby in 1802.

[13] The European Chemical Society gave the Ytterby mine and the industrial complex of ABEA, Crete, Greece its Historical Landmarks Awards for 2018.