- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2015)
- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2014)
- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2013)
- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2010)
- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2004)
- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2003)
- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2002)
- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2001)
- District-wise Production of Lignite from Opencast Workings by Mechanisation and Overburden Removed in Tamil Nadu (2000)