A common misspelling referring to the non-magnetic drill collar used near surveying tools.
NMDR
Definition
None Magnetic Drilling Collar
NMDR means None Magnetic Drilling Collar.
✓ Verified term
You might also be looking for
None Magnetic Drilling Collar
NMDR means None Magnetic Drilling Collar.
A common misspelling referring to the non-magnetic drill collar used near surveying tools.
You might also be looking for