| 41. | His last words were " bituminous coal ".
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| 42. | It is a thick reddish brown liquid, possessing a bituminous odor and taste.
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| 43. | The exploitation of bituminous rocks and natural seep deposits dates back to paleolithic times.
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| 44. | Between 1903 and 1950 it produced about 6 Mt of sub-bituminous coal.
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| 45. | There are also bituminous coal fields near K�nadsa.
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| 46. | Otta seal is formed by adding graded aggregate to a soft bituminous binding agent.
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| 47. | Overall, there was a 25 percent increase in Bituminous coal mining since 1900.
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| 48. | Minerals in the watershed are mostly bituminous coal, fireclay, sandstone and slate.
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| 49. | Since that time, bituminous material has been applied to the roof several times.
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| 50. | That is why the local coal is bituminous, rather than semi-anthracite.
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