M.Tech

Sorry to inform you, but no. For M.Tech, either you should have a post graduation degree or undergraduate degree in a technical field that means B.Tech. You cannot go for M.Tech after B.Sc, however, some universities still offer M.Tech of 3-year duration after your B.Sc. Yes, some M.Tech courses can be done after B.Sc like M.Tech in material science engineering of Mysore University. If you look at nano technology and material engineering courses, these students are allowed to do M.Tech, contact your university. For streams like M.Tech in electronics, civil and mechanical, you should have done BE/B.Tech/AMIE, it is a must. You can pursue M.Tech after your M.Sc for subjects like electronics after attending GATE exams. For more details, contact Mysore University website's metallurgy and material Science engineering section.

You are a mining engineer and your desire is to do M.Tech in mining, but via distance education. You are already a mining engineer and hence I am sure you know how much practical training is required especially for this branch of engineering. I will perhaps say that this is one of the most intensive practical oriented branch of engineering. With this in background, I will say that there are very few Institutions which offer this course at post-graduation level. Since giving practical knowledge particularly at M.Tech level becomes a bit difficult. However I am attaching a link that will give you the places where you can do M.Tech in mining engineering. Once you do this you can pick out the places where it is available in distance education mode also and have a correspondence with them. I will however give you a word of caution that please ensure that the college which is offering you this is indeed attached to organized University and is current with their syllabus. Best wishes to you.

Eligibility:
Qualification: Graduation
Additional Details
Mandatory Courses: BE / B.Tech, MBBS, B.Sc.
Admission Process
1. Entrance Test
Eligible candidates need to appear for the Entrance Test conducted by the University.
2. Merit Screening
Admission is based on the rank in the Entrance exam conducted by the University and Deprivation points awarded, if applicable.
3. Separate merit lists are prepared for each category i.e. candidates belonging to SC, ST, OBC, PH categories.
Aspiring students from Nepal can take admission in JNU . You need to follow the admission procedure.
Seats Info
Total seats: 31
Category
15 for General 9 for OBC, 4 for SC, 4 for FN, 4 for ST, 2 for Kashmiri Pandits and 1 for PH.

It depends on your area of interest. If you are interested in business or management orientation go with MBA. But, if you want to pursue or master a particular specialization, which you tend to do, go for M.Tech. Just make a clear decision about it as both are beneficial in terms if job aspects. You have other options like:
Construction management (it have many sub divisions - check NICMAR)
Structural engineering
Concrete technology
Ocean engineering
Irrigation engineering
Environmental engineering
Transportation
Remote sensing
Soil and foundation
Steel structures
Precast technology
Sustainability
If you have plan to start your own firm then go with construction management instead of doing MBA. You can also try structural, steel, precast engineering from some reputed institution. There is a lot of opportunities in foreign. Sustainability will be in high demand in near future.