The Mid occurrence is located south of Tchentlo Lake, about 6 kilometres west of its eastern end, approximately 91 kilometres north of the community of Fort St. James.

This area is underlain by the southeastern end of the Late Triassic to Early Cretaceous Hogem Intrusive Complex, which has been recently mapped, to the east and northeast, as consisting primarily of Early Jurassic monzonite and syenite phases; these intrude rocks of the Middle Triassic to Lower Jurassic Takla Group (Open File 1992-4). Noranda Exploration Limited, however, has mapped the intrusive rock in the Mid area as mainly diorite with lesser areas of granodiorite and gabbro. South of the intrusive contact the rocks have been identified as augite porphyries and volcanic tuffs, probably of the Upper Triassic Witch Lake Formation (Takla Group).

The intrusive rocks are moderately fractured with the principal shear zones striking northwest. The two dominant fracture orientations are: 1) 150 degrees strike with 65 degrees east dip, and 2) 050 degrees strike with 40 degrees west dip. The main copper mineralization is associated with the northwest striking shear zones with the three main showings (Vector (093N 092), Mid and Nighthawk (093N 091)) forming a roughly linear feature.

The Mid zone is located in an area of very strong propylitic alteration. The showing is interpreted to be a shear zone approximately two metres wide that contains 15 to 20 per cent pyrite and chalcopyrite in a strong chloritic alteration zone. In the vicinity, two massive magnetite veins that contain chalcopyrite also occur. A sample taken at the Mid showings yielded 3.9 per cent copper, 1.6 grams per tonne gold and 9.1 grams per tonne silver (Assessment Report 20245, analysis sheet - sample 108335). Refer also to Assessment Report 20406 (Drawing 5) for additional details.

The Mid zone is along the same porphyry system (overall called the Main zone) that includes the Nighthawk (093N 091) located 1.6 kilometres to the south and the Vector (093N 092) located 900 metres to the north. See either of these two MINFILE descriptions for a common history of work that includes the Mid zone.

In 1996, Hudson Bay Exploration and Development Co. Ltd. completed an exploration program on the property containing the occurrence. Outcrop mapping, sampling and a geophysical survey was completed.

In 2009, a compilation of previous geochemical data was filed for assessment (Assessment Report 31227). Between 2010-16, a number of work reports were filed for Rich Rock Resources Inc.

In 2010, an airborne magnetic gradiometer, VLF/EM and radiometric survey was completed (Assessment Report 31689).

In 2012, an airborne magnetic gradiometer and radiometric survey comprising 146 kilometres of surveying was completed (Assessment Report 33354).

In 2015, a ground magnetic survey comprising 17.5 kilometres of surveying was completed (Assessment Report 35398).

In 2016, a soil geochemical survey comprising 150 soil samples was completed (Assessment Report 35927).

In 2019, ArcWest Exploration Inc. conducted a sampling program on the property containing the occurrence. Highlighted grab sample S849901 graded 1.5 grams per tonne silver and 0.30 per cent copper (Assessment Report 38504).

In 2020, Wedgemount completed a 112 line-kilometre airborne electromagnetic (VTEM) geophysical survey on the area.