Question: A surface mine has two alternative blasting layouts proposed: Layout A: More holes, lower charge per hole Layout B: Fewer holes, higher charge per hole

A surface mine has two alternative blasting layouts proposed:

Layout A: More holes, lower charge per hole

Layout B: Fewer holes, higher charge per hole

Both result in similar powder factors. However, fragmentation, flyrock complaints from nearby residents, and equipment utilisation differ. Critically assess which layout would be more appropriate in a mine located near a residential area and why

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