Archaeological finds prove that Rammelsberg copper ore was already being processed and traded in the 3rd century. Slag finds near Düna in the Harz Mountains could be clearly attributed to the deposit. This makes Rammelsberg one of the oldest verifiable mining regions in Europe. First verifiable processing of Rammelsberg ore.
Transition from open-pit mining to underground mining. The Rathstiefste tunnel is being constructed.
Contrary to popular belief, the year 968 does not mark the beginning of mining at the Rammelsberg, but rather a period of its heyday. The silver contained in the ore became increasingly important and made Goslar a key center for coin minting within the Holy Roman Empire.
The Riechenberg Treaty changes the ownership situation at Rammelsberg.
Georg Agricola mentions the Rammelsberg in his work "De re metallica".
Johann Christoph Roeder is modernizing mining with innovative hydropower technology.
Start of the electrification of the mine.
Between 1935 and 1942, the surface facilities of the ore mine underwent extensive redesign. During this period, many of the buildings that still characterize the appearance of the World Heritage Site were constructed – including the striking ore processing plant.
After approximately 3,000 years, active mining at the Rammelsberg has come to an end. The ore reserves were largely exhausted. Until its closure, a total of around 27 to 30 million tons of ore were extracted – a unique chapter in German mining history.
Just two years after its closure, the newly founded museum and visitor mine opened its doors. Initial exhibitions were set up, and visitors could explore the historic Roeder Tunnel.
Together with the historic old town of Goslar, the Rammelsberg mine has been added to the UNESCO World Heritage List. This designation recognizes the exceptional importance of the mine and its close connection to the history of the region.
