Exploration Drill Hole Size and Diameter
Code |
Core Diameter (mm) |
Pit survey diameter (mm) |
XR |
18.3 |
30 |
EX |
21.4 |
36 |
EXT |
23.8 |
36 |
AX |
29.4 |
47 |
AXT |
32.5 |
47 |
BX |
42.1 |
59 |
NX |
54.8 |
75 |
Code
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