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Cut-Off Grade – The Impact of Getting it Right!
Author(s):
Gary Poxleitner, Joe Rowland
Date:
Tuesday, April 30, 2019
First presented:
CIM
Type:
Presentation
Category:
Mining
This paper will first define, at a high level, what a cut-off grade is. It will then delve into the linkage between COG and how it supports, or hinders, attaining your overall corporate objectives. The importance of fully understanding and defining these objectives should be well understood and communicated before venturing down a cut off grade practice. We will then explore what goes into a cut off grade calculation and the impact that this has on your reserves base, mine plan, cashflow and overall sustainability of your operation. Presented will be a summary of what various cut off grade policies and inclusions are used in the industry (based on a survey of nearly one hundred projects and operations). Finally, it will be understood that the selection of a cut-off grade is essentially a trade-off off study exploring a multitude of scenarios that reflects your own project or operations objectives.
Animated Presentation:
