| Trend in Employment from Gassy Coal Mines having Degree II or III Seams in India (19171, 1976, 1981, 1986, 1991 to 2015) | ||||||
| Years | No. of Mines having Degree ll or lll or Both ll and lll Gassy Seams | Employment in Gassy Seams (In ` 000) | Output from Gassy Seams (In Million Tonne) | No. of Mines having Gassy Seams to Total No. of Mines having UG Workings | Employment in Gassy Seams to Total UG Employment | Output from Gassy Seams to Total UG Output |
| 1971 | ||||||
| 1976 | ||||||
| 1981 | ||||||
| 1986 | ||||||
| 1991 | ||||||
| 1992 | ||||||
| 1993 | ||||||
| 1994 | ||||||
| 1995 | ||||||
| 1996 | ||||||
| 1997 | ||||||
| 1998 | ||||||
| 1999 | ||||||
| 2000 | ||||||
| 2001 | ||||||
| 2002 | ||||||
| 2003 | ||||||
| 2004 | ||||||
| 2005 | ||||||
| 2006 | ||||||
| 2007 | ||||||
| 2008 | ||||||
| 2009 | ||||||
| 2010 | ||||||
| 2011 | ||||||
| 2012 | ||||||
| 2013 | ||||||
| 2014 | ||||||
| 2015 | ||||||
