Hi Aspirant

Definately you can do mining engineering after Mechanical engineering but you need to qualify GATE(Graduate aptitude test in engineering) in Mining engineering.

If you will be able to score good enough (Cut off of the colleges),You will be able to do it.

Visit the link given below to check the syllabus of mining engineering here:

http://gate.iitm.ac.in/Syllabus

Visit the link given belw to see the cut off of the colleges:

https://engineering.careers360.com/articles/gate-cutoff-for-iits

https://engineering.careers360.com/articles/gate-cutoff-for-nits

Visit the link to see GATE cut off every year:

https://engineering.careers360.com/articles/gate-cutoff

Copy and paste these links in new tab to open it.

Hope this was helpful.