Hi,

IIT Dhanbad formerly known as Indian School of Mines ISM dhanbad is famous for offering mining related courses. In environmental engineering, Almost all the students got placed in core companies with packages ranging from 12 Lacs to 6 Lacs and average package was around 7-8 Lacs . Companies like Tata Steel, JSW, vedanta, adani, prism and Johnson, aarti industries etc. were prominent Employers. While NIT-Warangal has also had good placements in Chemicals engineering. Around 70-80% students got placed in companies with average package of around 8 lakh. Placement wise both institute are similar but IIT Dhanwad has better Placement percentage. Also it has better reputation both in academics as well as in  Rankings. If you want to pursue Higher studies then IIT would be beneficial for you are the value of LOR from an IIT's professor is greater. Overall IIT Dhanbad seems to be better choice among these two

I hope this will answer Your query.

Thanks!!!!!