PARAMETER

OXIDE

TRANSITION

FRESH

Burden (m)

4.0

3.5

3.5

Spacing (m)

4.0

4.0

3.8

Hole diameter (mm)

115.0

115.0

115.0

Bench Height (m)

6

6

6

Sub-drill (m)

0.8

0.8

1.0

Pattern Type

Staggered

Staggered

Staggered

Final Stemming (m)

3.5

3.4

3.4

RBS of Blend Explosives

142.0

142.0

142.0

Explosive Type (Blend - 30% ANPP & 70% Emulsion)

Emunex8000

Emunex8000

Emunex8000

Explosive density (kg/m3)

0.0012

0.0012

0.0012

Relative Effective Energy

94.7

94.7

94.7

Drilling Cost ($/m)

14.25

14.25

9.69

Explosive Cost ($/t)

930

930

930

Charge per meter, Mc (kg/m)

12.47

12.47

12.47

Charge length (m)

3.3

3.4

3.6

Mass per hole (kg)

41.15

42.40

44.89

Mass above grade (kg)

31.17

32.42

32.42

Technical powder factor (kg/m3)

0.32

0.39

0.41

Actual powder factor (kg/m3)

0.43

0.50

0.56