Lignite is the lowest rank of coal, often referred to as brown coal, used almost exclusively as fuel for steam-electric power generation. It is brownish-black and has a high inherent moisture content, sometimes as high as 45 percent The heat content of lignite ranges from 9 to 17 million Btu per ton on a moist, mineral-matter-free basis. Production data include quantities extracted from surface and underground mines, and normally exclude wastes removed at mines or associated reparation plants.
| तिथि | मान | बदले , % |
|---|---|---|
| 2022 | 36,804 | 14.03% |
| 2021 | 32,275 | -0.52% |
| 2020 | 32,444 | -21.45% |
| 2019 | 41,305 | -4.39% |
| 2018 | 43,200 | -0.29% |
| 2017 | 43,327 | 2.02% |
| 2016 | 42,470 | 1.11% |
| 2015 | 42,004 | -0.19% |
| 2014 | 42,083 | -5.47% |
| 2013 | 44,517 | -12.31% |
| 2012 | 50,764 | -3.81% |
| 2011 | 52,772 |