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carnalita, silvinita y demás sales de potasio naturales, en bruto
carnallite; sylvite and other crude natural potassium salts as mineral or chemical fertilizers (excluding in tablets, similar forms, or in packages of a gross weight ≤ 10 kg)
mdpa explotaba un yacimiento alsaciano de silvinita que permitía obtener cloruro potásico utilizado como abono o como materia prima industrial desde 1904.
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.