$PGLC / $V.PGLC Load permeability testing of indi
Post# of 144482
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Posted On: 06/09/2017 1:31:27 PM
$PGLC / $V.PGLC Load permeability testing of individual mineralization types with high fines indicated that agglomeration cement additions in excess of 10 pounds per ton processed would be required to maintain adequate solution permeability if placed in the deepest portions (200 feet down) of the heap-leach pad. In contrast, low-fines mineralization types showed that adequate permeability could be maintained at that depth with less than 5 pounds of cement per ton processed.
Load permeability testing of blended material consisting of 30% of high-fines and 70% low- fines material showed adequate permeability would be maintained to depths in excess of the 200 feet planned heap leach pad height with a cement dosage rate of 5 pounds per ton. The PEA assumes a cement addition rate of 8 pounds per ton as a conservative budget number. Ongoing test work will establish cement addition requirements for varying ratios of high-fines to low-fines material.
Load permeability testing of blended material consisting of 30% of high-fines and 70% low- fines material showed adequate permeability would be maintained to depths in excess of the 200 feet planned heap leach pad height with a cement dosage rate of 5 pounds per ton. The PEA assumes a cement addition rate of 8 pounds per ton as a conservative budget number. Ongoing test work will establish cement addition requirements for varying ratios of high-fines to low-fines material.
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