The Hall (Bohan) occurrence is located in the north western head waters of Arrow Creek, at an elevation of approximately 1800 metres.
The area is underlain by carbonate rocks of the Dutch Creek and Kitchener formations of the Middle Proterozoic Purcell Supergroup. Lithologies include limestone, dolomitic limestone and variable argillites; locally the limestone is argillaceous.
Locally, as defined by drilling in 1989, there is a breccia of white calcite and grey to white quartz replacing the limestone; some alteration is associated, including tremolite-actinolite and talc. Mineralization is very limited in the core; very weak pyrite, galena and sphalerite can be seen in the breccia zone, with greater amounts of disseminated pyrite in the underlying thin-bedded argillites.
More recent diamond drilling, in 2004 and 2005, intercepted oxidized and siderite- altered zones in argillite and dolomite hosting disseminated to small veinlets of pyrite, galena and sphalerite associated with quartz veins.
In 2004, diamond drilling yielded up to 0.205 per cent lead, 0.131 per cent zinc and 27.1 grams per tonne silver over 6.1 metres from BH04-1, while BH04-2 intercepted 0.340 per cent lead, 0.343 per cent zinc and 5.9 grams per tonne silver over 3.84 metres (Assessment Report 27795).
In 1980, Amoco completed a soil sampling program on the area as the Paul claims. The original stream silt anomaly had lead and zinc values up to 480 and 2750 parts per million, respectively; the source was defined by soil sampling and profiling, giving values as high as 12 ,000 parts per million zinc and 4230 parts per million lead (Assessment Report 19533).
In 1988, Cominco completed a program of soil sampling and a 12.1 line-kilometre ground induced polarization survey on the area as the Hall claims. This work identified another area of anomalous lead in contour soil lines on the eastern side of the Hall property (162 parts per million lead) but no source was discovered. The following year, a lone drill hole, totalling 147.8 metres, was completed. No assays of the drill core were reported.
During 2000 through 2008, Eagle Plains Resources completed programs of rock, silt and soil sampling, geological mapping, an airborne geophysical survey and six diamond drill holes, totalling 802.3 metres, on the area as the Bohan property.