MDPA har siden 1904 udnyttet en sylvinitforekomst i Alsace med henblik på at udvinde kaliumklorid, der anvendes som gødning eller råstof i industrien.
MDPA had been working a sylvinite deposit in Alsace since 1904 in order to obtain potassium chloride, which is used as a fertiliser or as a raw material for industry.