#i am not 100% certain if hallwyll owned the very iron factory in the background in 1920s

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Meanwhile in Ljusne, at the factories owned by the Hallwyl family

A photo of Ljusne iron factory from circa 1920s. You see the people in the boat down at the river?

Those are employees of the factory working at sorting the timber via the very much not advanced technology "very long stick"

Very dangerous work, if one make a mistakes one can fall into the river, and be swept underneath the woodstocks. You can clearly see they got no safety harness or anything. Only stick and small boat.

While the river might look still on the picture it got quite a current, otherwise it could not have been used as such a timber transporting river

(The timber would have floated, moved foward by the rivers own power until the on porpuse built blockage in Ljusne, were the timber was sorted, picked up and processed)

Yes, this is the factory village were the family Hallwyl, the ones with the super expensive house built in 1890s, owned.

Image source: link