Question: With reference to Problem 6.32 data, roof rock above the upper A Level is Bonneterre dolomite that is overlain by Davis shale. (a) Determine the

With reference to Problem 6.32 data, roof rock above the upper A Level is Bonneterre dolomite that is overlain by Davis shale.

(a) Determine the maximum opening width that is physically possible in the upper A Level ore horizon.

(b) With reference to Problem 6.32, assume square pillars, then determine minimum pillar width with respect to ore strength, given the results of part a.

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