Engineering Analysis of a Mining Share

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Reduced Development. Reduction in the development footage or in preparatory work incidental to stoping is common. Unless the general outlook for ore improves very materially, and provided the methods of estimation are not changed, these curtailments will in time automatic- ally be reflected in the ore reserves. If any doubt whatever as to the intentions of the management is entertained, the details which go to make up the development returns should be closely compared from year to year. It seem
...s OPERATING PROFITS vs. DIVIDENDS 51 unnecessary to amplify this by stating that drifting or crosscutting is cheaper than shaft sinking, that raising is cheaper than sinking winzes, etc. , and that since all of these and other items enter into the development scheme of most mines, the total footage accomplished is not neces- sarily a criterion by which to judge.
Some years ago I had occasion to investigate a property on the Gold Coast of West Africa. The mine in question was worked through a shaft and opened by levels at 100- ft.


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