Phelps Dodge Pyramid cut round for electric blasting

Copper Queen 16 hole toe cut

4 hole burn standard XC Round( Phelps Dodge)

5 hole burn standard XC Round( Phelps Dodge)

XC V-cut round found on 4th level Southwest mine

Standard XC round 16 hole V-cuts (Copper Queen) drill steels have been placed in holes to show positions and angle they were drilled.

Copper Queen 10 hole V Cut for timbered drifts

Copper Queen 12 hole V Cut