Answer:
The burden distance is 7 ft
Solution:
As per the question:
Specific gravity of package emulsion, [tex]SG_{E} = 1.25[/tex]
Specific gravity of diabase rock, [tex]SG_{R} = 2.76[/tex]
Diameter of the packaged sticks, d = 3 in
Now,
To calculate the first trail shot burden distance, B:
[tex]B = [\frac{2SG_{E}}{SG_{R}} + 1.5]\times d[/tex]
[tex]B = [\frac{2\times 1.25}{2.76} + 1.5]\times 3 = 7.22[/tex]
B = 7 ft
