21. Deposits of bituminous coal are found in these rock formations. 22. These were mined commercially for bituminous coal for nearly 140 years, between 1819 and 1958. 23. An immense deposit ( ) of bituminous coal was found in St . Clair County. 24. The opening of the coalfields made N & W prosperous and Pocahontas bituminous coal world-famous. 25. The Intermontane and Insular Coalfields of British Columbia also contain deposits of Cretaceous bituminous coal . 26. In 1853, Dr . Ansted helped identify the rich bituminous coal seams which lay there. 27. Production of bituminous coal declined steadily after World War II, and in 1968 ceased altogether. 28. Anthracitization is the transformation of bituminous coal into anthracite. 29. The Bituminous Coal Miners'Strike of 1894 lasted from late April through May of that year. 30. The plant takes advantage of the abundant deposits of bituminous coal from the Surat Basin.
