polygonal method

polygonal method

[pə′lig·ən·əl ′meth·əd]
(mining engineering)
A method of estimating ore reserves in which it is assumed that each drill hole has an area of influence extending halfway to the neighboring drill holes.
References in periodicals archive ?
At the conclusion of the CBI program, Coeur d'Alene using a simple polygonal method in drilling by cross section, identified a historic gold-copper resource comprising approximately 94 million tonnes grading approximately 0.
The polygonal method of calculation is complementary to the one done in 2007 by Coffey Mining (NI 43-101) and raises this part of the resource from inferred to indicated.
A Table of the JORC Code Inferred Resource is outlined below; TABLE 1 CORELLA BORE / PHM SOUTH INFERRED RESOURCE (KORELLA DEPOSIT) (Computer Generated Polygonal Method Based on Simple Flat to Low Dipping Tabular Body)
The resource was manually calculated using a longitudinal block section method which was duplicated and verified by a polygonal method using "BORSURV" software.
12% MoS2) which was calculated using the polygonal method, containing 150 million pounds of Molybdenum, (250A million pounds of MoS2) as stated in the press releases dated December 14th, 2006, April 10th, 2007 and June 21st, 2007.
The mineral resources are in addition to the reserves and were estimated by the polygonal method using drill hole data that met the minimum geologic width and cutoff grade as follows:
12% MoS2) which was calculated using the polygonal method, containing 150 million pounds of Molybdenum, (250 million pounds of MoS2) as stated in the press release dated DecemberA 14th, 2006 (http://www.
The lower quantity of Inferred resources is expected as the block model process requires four intercepts within the search area to calculate a block, while in the polygonal method intercepts can be extrapolated for up to 150 metres along the principal direction.
The resource was calculated using a polygonal method and is roughly analogous to CIM definitions "Indicated" and "Inferred".
The resource was calculated using a Plan Polygonal method with a 90-metre radius from each drill hole and a 2-metre maximum waste gap.
In estimating the resource to be used for outlining potentially minable blocks, a polygonal method was used in the plane of the veins.
Resources were calculated with the Gemcom software for zones B2, BN and P and with the polygonal method on a longitudinal section for the other zones.