Grand Est
One of the most exceptional mining complexes in French Alsace, where potassium or potash was brought to the surface, is the Carreau Rodolphe.
Fertilizer industry
Artificial fertilisers were used from the nineteenth century onwards. Fertilisers contain nitrogen, phosphorus, potassium, calcium, sulphur and magnesium, among others.
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Brandenburg
Chemiewerk Rüdersdorf was founded in 1899 as a cement factory near the city's lime quarries.
Grand Est
In 1904, potassium deposits were discovered in French Alsace. Potassium, or potash, is one of the most essential nutrients for plants, together with nitrogen and phosphorus. That is why potash was exploited to make fertilizer.
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