The Ewin Pass occurrence is located approximately 14.5 kilometres east-northeast of Elkford, British Columbia, north of the Line Creek Mine (MINFILE 082GNE020).
Up to 17 coal seams are present in the Jurassic-Cretaceous Mist Mountain Formation (Kootenay Group) of which seams 4, 5, possibly 6, 8 and 9 are workable. Seam 4 averages 8.1 metres and thickens towards the north. Coal in seam 4 is very clean. Seam 5 (25 metres stratigraphically below seam 4) averages 2.5 metres thick and also thickens towards the north. Seam 6 (20 metres below seam 5) averages 0.8 metres and is consistent across the Ewin Pass property. Seam 8 (85 metres below seam 6) averages 13.3 metres, thickens in the middle of the map area, and like seams 4 and 5, is faulted in the northern part of the property. It is, despite the structural disturbance, of consistently good quality. Seam 9 (95 metres below seam 8) averages 8.3 metres thick, is repeated by faulting and is not as high a quality as seams 4 and 8. Seams 10B and 10A both average 1.6 metres in thickness and are extremely shaly. Seams stratigraphically above seam 4 are thin and less than 1.5 metres thick.
The Ewin Pass property lies on the east flank towards the south end of the northwesterly trending, northwest plunging Alexander Creek syncline. Two northerly trending minor folds occur on the property. Towards the western margin of the property the Ewin Pass thrust (a roughly northwesterly trending, west dipping fault) truncates the folded strata. Strikes on Ewin Pass Ridge are 190 to 200 degrees and dips 20 to 60 degrees, averaging 37 degrees to the west. In places, particularly in the northern part of the area, bedding is overturned to the east.
Seams 4, 8 and 9 contain (air dried basis) from 6.3 to 8.5 per cent ash, 21.6 to 27.5 per cent volatile matter, 64.5 to 69.5 per cent fixed carbon and 0.40 to 0.56 per cent sulphur with a Free Swelling Index from 5.0 to 8.5 (1981).
Exploration work by Crow’s Nest Resources Ltd. from 1979 through 1981 included geological mapping, diamond drilling, reverse circulation drilling, trenching, driving adits, bulk sampling, location surveys, and reclamation (Coal Assessment Reports 396, 397, 398). Geological in-place reserves are estimated to be 103 million tonnes, of which 47 million tonnes are proven, 46 million tonnes probable and 10 million tonnes possible (Coal Assessment Reports 397, 398).
In 1993, Line Creek Resources conducted a Horizontal Loop Electromagnetic survey on the Saddle (Ewin Pass) property to assist in the interpretation of structural geology in the area (Coal Assessment Report 831).
In 2007, Line Creek Resources drilled an unreported number of exploration holes on the Saddle (Ewin Pass) property (Exploration and Mining 2007).