mining camps to nearby industrial areas was high. The miners split into several unions, with an affiliation to a political party. As a result, the socialist union (affiliated with the Social Democratic Party) competed with Catholic and Communist unions until 1933, when the Nazis took over all of them. After 1945 the socialists came to the fore. India Coal was not known during the Mughal rule despite their contact with Europeans. Commercial exploitation began in 1774, John Sumner and Suetonius Grant Heatly of the East India Company setting up operations in the Raniganj Coalfield along the Western bank of river Damodar. Due to a lack of demand growth was sluggish until 1853, with the introduction of steam locomotives to the fast-expanding rail system. As late as 1895, India imported large quantities of coal from Britain, but as domestic production increased and was found to be suitable for locomotives and ships, demand for coal imports declined dramatically. India's export of coal increased, especially to Burma, Ceylon, and the Malay states. By 1900 production had risen to an annual average of 1 million tonne (mt) and India was producing 6.12 mts. per year by 1900 and 18 mts per year by 1920. Temporary wartime demand (1914-1918) was followed by a slump in the 1930s. The production reached a level of 29 mts. by 1942 and 30 mts. by 1946. After India became independent, the new government stressed the rapid growth of heavy industry. The National Coal Development Corporation was founded in 1956 (as a Government of India) undertaking. The founding of this body was major step in the development of an indigenous Indian coal sector. Especially important was the development of the vast Dhanbad coal-mining complex with such major operations as Tata Steel, BCCL, ECL and IISCO (Indian Iron And Steel Company), as well as the Indian School of Mines IIT (ISM) Dhanbad to train engineers, geologists and managers. Poland The first permanent coal mine in Poland was established in Szczakowa near Jaworzno in 1767. In 19th century development of iron, copper and lead mining and processing in southern Poland (notably in the Old-Polish Industrial Region and later in the region of Silesia) led to a quick development of coal mining. Among the most prominent deposits are those located in what are now the Upper Silesian Industrial Region and Rybnik Coal Area (formerly part of Prussia) and the Zagłębie Dąbrowskie on the