The Crown Mountain Coal project lies within the Elk Valley coal field in southeast British Columbia, Canada. The property is divided into three structural domains with separate geological attributes. The domains are referred to as the North Block, South Block, and Southern Extension. The Crown Mountain thrust fault (“CMF”) separate the North Bock from the South Block and Southern Extension. Coal seams are hosted within the Jurassic to Lower Cretaceous Mist Mountain Formation. The coal bearing Mist Mountain Formation is underlain by the Morrissey Formation which includes the regional cliff forming Moose Mountain Member. Drilling has intersected three principal seams, named 8 Seam, 9 Seam and 10 Seam. The 8 and 10 Seams consist of three major plies. The term major seam has been defined to include all seven seams in order to distinguish them from other coal horizons referred to as rider seams. The seven major seams have combined average net coal zone thickness of 35.32m in the North Block, 15.04m in the South Block and 14.79m in the Southern Extension.

The mining method selected for Crown Mountain in the BFS is open pit. Mining equipment includes excavators, front end loaders, and haul trucks, supported by dozers, backhoes, and blasthole drills. This type of equipment is typical for Elk Valley mining operations, and includes equipment specific to selective mining in certain thinner seams present on the property. The majority (90%) of overburden removal is projected to require blasting.

The mine plan has been sequenced to extract the low strip ratio North block first, followed by the smaller East block (a subset of the South block, but a distinctly higher quality and discrete mine pit) and ultimately the large South block, from South to North. After pre-stripping, North block coal is mined.

The first four years of mining occurs in the North and East pits which is lower ROM strip ratio of 4.1 BCM:ROM tonnes and higher yield (61.2%), producing up to 2.3 Mtpa. The mine then progresses to the South Pit which is mined from the South to the North.

Mined ROM coal is hauled from the pit to a rotary breaker where some of the larger size OSD is removed.

The Updated 2017 PFS developed a traditional three-circuit coarse/small/fine with a middlings liberation circuit. With the availability of the 2018 large diameter core bulk samples and extensive middlings liberation testing, the middlings circuitry was reviewed and ultimately eliminated from the design. However, the basic CPP process design remains similar to the updated PFS, except with significant refinements to the small and fine coal circuits.

Material changes in plant design in the BFS versus the Updated 2017 PFS are:
- Removal of the middlings circuit due to the marginal yield gains being achieved thereby rendering it uneconomic
- Inclusion of Plate and Frame Filters to dewater ultrafine tailings ensuring a lower moisture aligned with incorporation into the layer cake spoil management plan.

Washed coal will be conveyed down the mountain (3 km) and then trucked approximately 15 km to a stockpile/loadout area where the product will ultimately be load ........