Explanation:

• On 10th February 2015 bentonite has been declared as 'Minor Mineral' hence the production is not available with IBM. Bentonite is exploited mainly by manual and at places by semi-mechanised methods by deploying shovels and dumpers for mining, haulage, etc. The major minerals cover fuel minerals consisting of coal, lignite, petroleum & natural gas and other major minerals i.e. metallic minerals including atomic minerals and non-metallic minerals. Minor minerals consist of materials such as marble, slate, shale etc.

Hence option 4th is correct.
Source: http://www.mospi.gov.in/sites/default/files/reports_and_publication/statistical_manual/Chapter%2012.pdf