Mining or in situ disintegration of hard material
Processes
Explosive
Inventor
active
No associations
LandOfFree
Nikolai S. Efremovtsev does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Nikolai S. Efremovtsev, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nikolai S. Efremovtsev will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1718030