Figure 10. Energy and Mineral Resources Source: Based on information from Klaus-Detlev Grothusen (ed.), Bulgarien, Göttingen, Germany, 1990, 16. Bulgaria is relatively poor in both quantity and quality of natural resources. This situation has been an important factor in planning the national economy and foreign trade. The primary indigenous mineral resources are coal, copper, lead, zinc, and iron ore. Coal and Minerals Lignite, by far the most prevalent form of coal, is mined chiefly in the Maritsa-zapad (West Maritsa) and Maritsa-iztok (East Maritsa) sections of the Maritsa Basin (see fig. 10). The main source of other grades of brown coal is the Bobov Dol deposit in the Rila Mountains of southwest Bulgaria. There is little bituminous coal in the country. Copper is mined chiefly in the Sredna (central hills) in the western Balkans, and at Chelopets in south-central Bulgaria. There are also large deposits of lead, zinc, and iron ore, the largest of which are at Kremikovtsi. Bulgaria became self-sufficient in the production of pig iron in 1987. Manganese, uranium, gold, salt, and chromium also are mined. Small amounts of oil are extracted offshore in the Black Sea and inland near Pleven. Data as of June 1992
|