Extending Applicability of the Crown Pillar Scaled Span Method to Shallow Dipping Stopes

Apr 10, 2002

The original development of the scaled span concept for evaluating crown pillar stability encompassed review of a database of over 200 case records, mainly comprising openings in relatively steep ore bodies. More recent updating has added a number of shallower dipping cases into the database. This has highlighted some limitations to the original design concepts. These limitations are addressed in this paper.  Please see attached PDF.

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