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A mathematical model to guide the discovery of ore bodies in a Coeur d'Alene lead-silver mine.

Authors
Koch-GS Jr.; Schuenemeyer-JH; Link-RF
Source
NTIS: PB 240 836 :1-43
Link
NIOSHTIC No.
10009320
Abstract
A mathematical simulation model has been devised to guide the layout of underground mine workings, drill stations, and drill holes that are established in order to search for tabular ore bodies. Developed and tested for elliptical ore shoots in fissure veins in the Galena Mine, Coeur d'Alene District, Idaho, the model can also be applied to ore bodies contained within sedimentary beds (for instance, many types of uranium, copper, and gold ore bodies) or other tabular structures. Programed for a time-shared digital computer, the model contains both stochastic and deterministic variables. Stochastic or natural variables include the number of ore shoots and their sizes, orientations, locations, and values. Deterministic or controllable variables include (1) locations and costs of workings ; (2) drill-station locations and costs; and (3) drill hole azimuths, inclinations, lengths, and deflections, if any. For various assumptions about the stochastic variables, the model is run while the controllable variables are changed deliberately. Thus, layouts are devised to determine the percentages of the total number of assumed ore shoots found at different costs.
Publication Date
19740101
Document Type
IH; Report of Investigations
Fiscal Year
1974
NTIS Accession No.
PB-240836
NTIS Price
A04
Identifying No.
RI-7989
NIOSH Division
DRC
Source Name
NTIS: PB 240 836
State
ID; CO
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