Question: Assume you are working as a Blasting Engineer at a mining company which acquires a new mine adjacent to its existing mine. The new mine

Assume you are working as a Blasting Engineer at a mining company which acquires a new mine adjacent to its existing mine. The new mine has deposits having same rock density of 150 lb/ft 3 as the existing mine. You are given the responsibility to design blasting pattern for the new mine using the existing drill machine having drill hole diameter of 12.3 inches. Further you are required to achieve a minimum powder factor of 0.88 lb/tons using ANFO having a density of 60 lb/ft 3 . Calculate the Burden and Spacing for the blast design. Assume S/B ratio as 1.25

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