Zinc ores, tin, gypsum, limestone, manganese, magnesite, coal, lignite, clay, columbite, ilmenite, mica, barite, galena, sodium chloride, silica sand, granites, tantalite, sphalerite, talc, marble, heliodor, titanium, cooking coal, iron ore, kaolin, calcite, copper ore, laterite, bismuth, wolframite.
