Name of the Mine
Pan mine.

Location  
Northern Pancake Range in White Pine County, Nevada, in the US. 

Mine Owner/s  
Midtier gold producer Calibre Mining Corp.

Brief Description  
The Pan mine is a heap-leach gold-producing operation.

Brief History  
The deposit was discovered by Lyle Campbell in 1978, when he encountered gold-bearing jasperoid, now referred to as Campbell Jasperoid. 

Campbell staked 147 original unpatented mining claims and transferred ownership of the claims to the LFC Trust in 1986. The LFC Trust was bought out in 2008 by Gold Standard Royalty (Nevada) Inc, which merged with, and is now owned by, Nevada Royalty Corp. 

Since 1978, several claims have been added and released from the Pan claim block. From 1978 to 1993, several exploration companies leased the Pan claims and completed drilling programmes. The project was dormant from 1994 to 1998; however, the LFC Trust continued to manage the property until 2008. 

Exploration was started again in 1999 by Latitude Minerals Corporation, then Castleworth Ventures. The latter became Pan Nevada Gold Corporation, which was acquired by Midway Gold Corp in 2007. Midway added unpatented claims to the land position to assemble the current land package. 

In 2016, GRP acquired the assets and mineral leases held by Midway in the Asset Purchase Agreement. GRP was acquired by Calibre Mining Corp in 2021.

Primary Metals/Minerals  
Gold.

Secondary Metals/Minerals
None stated.  

Geology/Mineralisation  
Geology in the project area is dominated by mid- to late Paleozoic stratigraphy overlain by minor Tertiary-aged volcanic units. Quaternary-aged detrital deposits are limited to drainage channels. Consequently, there is good bedrock exposure in most of the project area.

Pan material comprises different types ore – harder, low-clay siliceous zones and softer, clay-rich argillic zones.

Pan has three main mineralised zones – North, Central and South. Gold mineralisation spatially follows the Devils Gate Limestone – Pilot Shale contact in all three zones and is also controlled by steeply dipping faults that trend north–south and secondarily by west-north-west open fold axes.

Reserves  
As at December 31, 2023, Pan mine had total proven and probable reserves of 24.63-million tonnes grading 0.34 g/t gold.

Resources  
Total measured and indicated resources as at December 31, 2023, were estimated at 98.21-million tonnes grading 0.88 g/t gold. Inferred resources were estimated at 9.88-million tonnes grading 0.81 g/t gold.

Type of Mine
Conventional hard-rock openpit mine.

Mining Method  
Calibre uses a contractor to drill, blast, load, haul and provide support equipment for the mine. The mining contract is a time- and materials-based contract for equipment and manpower, which enables Calibre to modify the size of the fleet and crews as needed to meet production requirements.

Major Infrastructure/Equipment  
Existing infrastructure includes electrical power supply and distribution, access roads, security fences and gates, water supply and storage, office buildings, an assay laboratory, a heap-leach pad and mineral processing facilities. 

All mine production equipment is provided by the mining contractor. Equipment on site includes CAT  992G/K loaders and CAT 777 off-highway haul trucks. The contractor uses three Atlas Copco DM45 drills for blasthole drilling. There are 11 haul trucks at the mine. 

Prospects
Calibre reported in May 2024 that additional near-surface, above-reserve- grade gold mineralisation had been discovered at the mine.

The drill results across the Pan mine property demonstrate the potential to increase resources, the grade, the mine life and confidence around the mine.

Contact Details 
Calibre Mining
Tel +1 604 681 9944
Email atcalibre@calibremining.com
Website https://www.calibremining.com/