Magnesitas de Rubian SA has been working in the field of caustic magnesite since 1963. The company is exploiting a mine of Magnesia in the North West of Spain, in Lugo (Galicia).
The magnesium ore is of high purity and once extracted, is transported to the calcination plant. The end product is a magnesium oxide used mainly in animal feeding. It has a high bioavailability for ruminants as shown in recent study at Schothorst Feed Research, The Netherlands.
The end products are sold under the brand name MAGAL.