The Sit area is underlain mainly by rocks of the Hadrynian to Paleozoic Snowshoe Group. This succession in general consists of black and grey siltite, micaceous quartzite, phyllite, limestone and minor dolostone.
Interest was drawn to the area in 1983 when test holes for placer turned up pyrite and galena from bedrock near the junction of Willow River and Montgomery Creek. VLF surveys were performed by Lacana Mining Corp in 1983 on the ground which was then the SIT claim consisting of 16 units. The survey only showed moderate conductors in areas known to contain overburden about 15 meters deep and suggested using geophysical methods which would provide better penetration. The work performed by Ruza Resources Ltd in 1988 consisted of 18.5 km of grid work, 70 soil samples (of which 40 were analyzed) and 7 rock samples.