Chapters cover general principles; minimum cut-off grades; cut-off grade for polymetallic deposits; cot-off grade and optimization of processing plant operating conditions; cut-off grade and mine planning for open- pit and underground selective mining; cut-off grade and mine planning for block and panel caving; costs to be included in cut-off grade calculations; the limits of marginal analysis in a gold leaching operation; mining capacity and cut-off grade when processing capacity is fixed; processing capacity and cut-off grade when mining capacity is fixed; mining and processing capacity and cut-off grade when sales volume is fixed; releasing capacity constraints; and relationships between mine selectivity, deposit modeling, ore control
, and cut-off grade.
One of the most important and hotly debated ore control
topics was whether or not the Keno Hill orebodies had depth potential.
In addition to CAES, Pipeline uses two other technologies for precise mine control; the Aquila high precision GPS guidance package on the blasthole drills and Maptek's Vulcan software for mine planning and ore control
, both implemented before CAES.
For example, the geology department requires survey information gathered by the surveyors to update ore control
systems will be installed on our entire fleet of P&H shovels, We expect a reduction in our mine-mill discrepancy and improved pit conditions due to constant elevation data being available to each shovel." Mike Maier and Connie Waddell stress the importance, for the future of satellite positioning, on communications between both people and machines and note, "the systems encourage [TABULAR DATA OMITTED] closer communication between operators, ore control
engineers and surveyors.