Mining at NIT Raipur is certainly an interesting choice. The Mining branch is one of the oldest branches at the institute. It is almost 70 years old. I have a few friends at NIT Raipur and here is what they had to say about the Mining branch.
Overall, NIT Raipur is certainly a good option for Mining Engineering. You will also have the opportunity to get a 3 day-long training at Kolkata at the cost of 40,000-50,000.