How to determine the diameter of the blasting hole?
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The diameter of the blasting hole matches the height of the turret. Generally speaking, the higher the table height or cutting is sandblasted, the larger the blasting hole diameter. The larger diameter of the blasting hole can hold more explosives, allowing the hole pattern design to have a wider spacing between the blasting hole. This usually means lower drilling costs and fewer holes to drill for a given production.
On the other hand, large diameter holes and wide spacing may cause coarse breaking. This is not a problem for operations that use large buckets to drag lines or shovel. However, some quarries, as well as construction blasting applications using small bucket front-end loaders, require the hole diameter to be kept small, resulting in finer debris. Fine debris, in turn, allows for effective removal and low equipment maintenance.
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