Flatenberg hytta.
Transcript from photo.

The Foundry of Flatenberg is one of the best preserved foundry environments in Sweden. It is written about the the place already in the 1300 and the first foundry was built about 1600.
In the furnace of the foundry iron ore was melted which had been broken in the mines nearby like: Humboberg, Håksberg, Nyberget and Gräsberg. The foundry place near lake Barken was carefully planned as the lake was an important transport way. 1795 was Strömshom channel ready and now the iron could be transported through Mälaren to Stockholm.

The foundry team.
The foundry of Flatenberg was owned by group farmers around. No factory has ever owned it. The so called Bergsmen were the foundry team.  South of the workplace there are still some fine manor houses owned by the owners.
These owners broke the ore themselves and also produced the necessary coal. All  of them had their own coal house and stores. Together they hired one foundry leader who was responsible for work in the furnace and in the decided order melted their ore to iron. 1907 there were 20 owners in the furnace team.

The foundry.
The foundry we can see today was built 1870. The furnace pipe is free from the building and 11 m high. Some years earlier was the rust oven built which can be seen to the left of the picture. Before the ore was able to be melted, they were forced to heat up the ore, to get rid of contaminations. The new built rust oven was fired with gas from the furnace. In this was energy was spared.
1870 the Flatenberg channel was digged. The water was taken through a tube down to the foundry and gave the water turbine power. There was also a steam engine installed to be used when water ceased. When there is guiding you can visit the machine house and se the turbine and also the crossing machine for ore and also the blowing machine. Here there are also different winders for slag path, ore path, coal path, rust oven path and lots of tool paths.

Pig iron.
The iron which was produced was pig iron. This is a iron type with much coal and it is not possible to forge. In order to get this iron forgeable it must get rid of coal. This was usually made in a hammer. During one period Flatenberg had one smaller forge a short way up streams the channel. Later the steel was moved to other more specialized hammers.
The Flatenberg foundry was in use up to 1918, but after the WWI the request for iron was reduced in Europe.
When the foundry was new it produced 20-30 tons of steel a year. In the end it was 3000 tons. In spite of it's effectiveness the furnace was not modern and it could not live longer.
1984 the old rust oven and furnace were renovated. The Judge house and wharf up to the rust oven was updated. Just on the back side of the furnace you can see one of the coal houses.
Take a walk along the was sight point. With the help of old photos you can see how Flatenberg looked like for 70-90 years ago.