Isabella Pearl Gold Mine & Processing Facility Environmental Assessment
The Isabella/Pearl LLC (IPLLC) is proposing to develop a cyanide heap leach gold mine and processing facility at the west end of the Santa Fe mining district in the Walker Lane gold belt about 9 miles northeast of Luning, Nevada, in Mineral County. The Isabella/Pearl Project is along the southwestern flank of the Gabbs Valley Range on the northwest side of Soda Spring Valley in all or parts of sections 27, 34 and 35 of Township 9 North, Range 34 East and section 3 of Township 8 North, Range 34 East, Mount Diablo Baseline & Meridian (see Map 1 in column to the right). The project site is accessible by means of a graded road, west from Nevada State Route 361.
The project encompasses 478.6 acres and would result in approximately 257 acres of disturbance.
Proposed new development for the Isabella-Pearl deposits will consist of:
*Open-pit mining, crushing and heap leaching of approximately 3 to 4 million tons of ore over an 18 to 24 month period.
*Mine and process 236,930 tons of ore per month over a period of 16 months following6 to 8 months of pre-production development and construction.
*Ore concentrates will be shipped offsite to a permitted facility to complete the final processing.
*Sulfide ore may be shipped offsite to a facility permitted to complete the final processing or will be encapsulated on site.
Facilities will include:
(3) Open pits that will merge in to a single pit
(1) Waste rock dump
Hauling equipment (100 ton capacity)
Crushing and conveying equipment
(1) heap leach pad (HLP) divided into two cells
(1) carbon adsorption-desorption-reactivation (ADR) plant
(1) pregnant solution pond
(1) barren solution/stormwater pond
(1) sulfide ore stockpile pad
(1) mine equipment shop
Contractor storage yard
Mobile offices and laboratories (atomic absorption analysis)
Power to the project will be supplied by onsite diesel generators
Production water will be from onsite wells
Scheduled mine life of approximately 3-4 years:
*Initial site preparation and construction over a 6 – 8 month period
*Approximately 16 months of active mining
*Reclamation and closure activities over a 6 – 8 month period
Employment will consist of approximately 100-125 people.
Public Scoping: Public scoping comments were accepted through April 15, 2011.
For more information, please contact Kenneth Depaoli at 775-885-6000.