Editing Chhattisgarh (section)

====Central India Coalfields====
The  [[Central India coalfields|Central India Coalfields]] are spread over the districts of [[Surguja district|Surguja]], [[Koriya district|Koriya]] (both in Chhattisgarh), [[Shahdol district|Shahdol]] and [[Umaria district|Umaria]] (both in Madhya Pradesh). The group covers an area of about {{convert|5345|km2}} with estimated reserves of 15,613.98 million tonnes. The deposits are at a depth of 0–1200 meters. Therefore, extraction is mainly amenable to underground mining except for a few blocks in the eastern part of these coalfields which have opencast potential.<ref>{{cite web | url = http://secl.gov.in/ | title = Central India Coalfields | work = Coalfields | publisher = South Eastern Coalfields Ltd | access-date = 2011-09-03 | archive-url = https://web.archive.org/web/20110902005800/http://secl.gov.in/ | archive-date = 2011-09-02 | url-status = dead }}</ref>

'''Jhilimili Coalfield''' located in [[Surguja district]] is spread over an area of {{convert|180|km2}}. Estimated total reserves are 215.31 million tonnes, out of which about half have been indicated to be Grade I.<ref>Shri Kamal Sharma, Resource Development in Tribal India, p. 166, 1989, Northern Book Centre, 4221/1 Ansari Road, New Delhi, {{ISBN|81-85119-57-0}}</ref> According to the [[Geological Survey of India]], total reserves of non-coking coal (as of 1 January 2004) in Jhilimili Coalfield (up to a depth of 300m) was 267.10 million tonnes.<ref>{{cite web| url =http://www.portal.gsi.gov.in/gsiDoc/pub/IndiaCoalResources2004.pdf| title =Coal Resources of India (As on 1.1.2004)| publisher =Coal Wing, Geological Survey of India, Kolkata| access-date =2011-09-06| url-status =dead| archive-url =https://web.archive.org/web/20120327022156/http://www.portal.gsi.gov.in/gsiDoc/pub/IndiaCoalResources2004.pdf| archive-date =2012-03-27}}</ref>

The '''Sonhat''' is a large coal field representing one of the largest [[coal]] reserves in [[India]] having estimated reserves of 2.67 billion tonnes of [[coal]].<ref name="auto1">{{cite web|url=http://ibm.nic.in/IMYB%202011_Coal%20&%20Lignite.pdf|title=Coal in India|year=2012|publisher=ibm.nic.in|accessdate=2013-07-23|url-status=dead|archiveurl=https://web.archive.org/web/20130811050549/http://ibm.nic.in/IMYB%202011_Coal%20%26%20Lignite.pdf|archivedate=2013-08-11}}</ref>

'''Bisrampur coal field''' represents one of the largest [[coal]] reserves in [[India]] having estimated reserves of 1.61 billion tonnes of [[coal]].<ref name="auto1"/>

'''Chirimiri Coalfield''' is located in the valley of the [[Hasdeo River]], a tributary of the [[Mahanadi River|Mahanadi]]. Opened in 1930 with production starting in 1932, and has been owned by several companies and owners such as Chirimiri Colliery Company Pvt. Ltd., Dababhoy's New Chirimiri Ponri Hill Company (Private) Limited, United Collieries Limited, K.N. Dhady and Indra Singh & Sons (Private) Limited. These were nationalized in 1973.{{citation needed|date=May 2018}}
This coalfield is spread over {{convert|125| km2}} of hilly country and includes both the sections – Kurasia and Chirimiri. Total reserves in the Chirimiri coalfield have been estimated to be around 312.11 million tonnes.<ref name=sharma>Shri Kamal Sharma, Resource Development in Tribal India, p. 165, 1989, Northern Book Centre, 4221/1 Ansari Road, New Delhi, {{ISBN|81-85119-57-0}}</ref><ref>{{cite web | url = http://chhattisgarhmines.gov.in/Coal.htm | title = Coal Deposits in Chhattisgarh | last =  | first =  | publisher = Directorate of Geology and Mining, Chhattisgarh | accessdate = 2011-09-06 | archive-date = 13 August 2011 | archive-url = https://web.archive.org/web/20110813125126/http://chhattisgarhmines.gov.in/Coal.htm | url-status = live }}</ref> According to [[Geological Survey of India]] reserves of non-coking coal up to a depth of 300 m in Chirimiri Coalfield was 362.16 million tonnes.<ref>{{cite web | url =http://www.portal.gsi.gov.in/gsiDoc/pub/IndiaCoalResources2004.pdf | title =Coal Resources of India (As on 1.1.2004) | publisher =Coal Wing, Geological Survey of India, Kolkata | accessdate =2011-09-08 | archive-url =https://web.archive.org/web/20120327022156/http://www.portal.gsi.gov.in/gsiDoc/pub/IndiaCoalResources2004.pdf | archive-date =2012-03-27 | url-status =dead }}</ref>