elect all true statements. In underground development blasting ... 1-long delays between holes should be used in the cut area to reduce vibrations and ensure smooth blasting 2-detonating cord rings can be used to connect detonators within a delay sector 3-the angle of breakage should be as large as possible to ensure each hole as free breakage
elect all true statements. In underground development blasting ... 1-long delays between holes should be used in the cut area to reduce vibrations and ensure smooth blasting 2-detonating cord rings can be used to connect detonators within a delay sector 3-the angle of breakage should be as large as possible to ensure each hole as free breakage
Solid Waste Engineering
3rd Edition
ISBN:9781305635203
Author:Worrell, William A.
Publisher:Worrell, William A.
Chapter4: Mechanical Processes
Section: Chapter Questions
Problem 4.18P
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Select all true statements. In underground development blasting ...
1-long delays between holes should be used in the cut area to reduce vibrations
and ensure smooth blasting
2-detonating cord rings can be used to connect detonators within a delay sector
3-the angle of breakage should be as large as possible to ensure each hole as free
breakage
4-one or more larger blast holes charged with explosives are used in the cut area
to breakout the central cut
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