The TS 3 (Sulphide Vein) occurrence is located on the west side of Birk Creek in its northern head waters, at an elevation of approximately 2000 metres.

Regionally, the area is underlain by the Graffunder Lakes, Skwaam Bay and Slate Creek units of the upper Paleozoic to lower Cambrian Eagle Bay Assemblage, which consist of micaceous quartzite, sericite quartz schist, mudstone, siltstone, shale and calc-alkaline volcanic rocks. These have been intruded by quartz monzonitic rocks of the Cretaceous Baldy Batholith.

Locally, an oxidized, massive, medium- to coarse-grained pyrite-pyrrhotite-chalcopyrite vein, lens or bed, approximately 2 metres thick, is exposed over a strike length of approximately 5 metres. The mineralization strikes 125 degrees, dips 60 degrees south-west and is hosted by a recrystallized limestone on the hanging wall of the zone. A gossanous boulder zone is reported approximately 250 metres from and along strike of the vein.

In 1996, sampling of the mineralized zone yielded up to 3.75 grams per tonne gold and 0.15 per cent copper (Property File - Carter, N.C. [1997-04-17]: Memo on summary of 1996 exploration work on E-D 1 Property - Birk Creek Area, Kamloops Mining Division - For Foran Mining Corporation).

In 1973, Craigmont Mines completed a regional program of geophysical and geochemical surveys on the area. During 1989 through 1997, Foran Mining Corp. completed exploration programs including soil sampling, various geophysical surveys, trenching and seven diamond drill holes, totalling approximately 900 metres, on the area as the E-D 1 (MINFILE 082M  274) and TS claims.