The Smelting Houses

In the smelting houses, copper was extracted from the ore, which came from the mines. The process continued day and night and there was great activity both in and outside the houses.

The New Method of Smelting
From the year 1887 ‘turn-roasting’, black-copper smelting and refining were all discontinued at the main smelting house in Røros.
The Old Method of Smelting
The ore, which came from the mines in Røros contained mainly, copper, iron, sulphur and other minerals. The ore was considered rich if the content of copper reached, 4% – 6%.
The end product - Copper
The end product after the processing through the smelting houses at Røros Copper Works was the metal copper.
Some of the Other Smelting Houses
After only a few years of production at the Røros smelting house, the surrounding forests over an enormous area had been felled. The cost of transporting charcoal and wood to the smelting house increased yearly.
The Smelting House at Røros
The smelting house was the keystone in the mining operation. It was in the smelting house that the ore underwent a long and laborious smelting process before the end product was ready for export.

Røros was added to UNESCOs of World Heritage Sites in 1980, refer also to Riksantikvaren, ( Norwegian Inspectorate of Ancient Monuments and Historic Buildings).
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