This property lies at the head of Woodbury Creek on the ridge between it and Sawtooth Creek, a tributary of Keen Creek, at the 2408-metre elevation. It may be reached by approximately 8 kilometres of trail from where the Scranton road turns up Pontiac Creek. The property is located in Kokanee Glacier Provincial Park.
The area is dominated by granitic rocks of the Middle to Late Jurassic Nelson Intrusions.
At the Silver Cup occurrence, a barren-looking quartz vein occurs in hornblende-potassium feldspar porphyritic granite of the Nelson Intrusions. The vein extends for several hundred metres with an average 015 degree strike and 70 degree easterly dip. The vein width is approximately 2.3 metres. Mineralization consists of stringers of galena, sphalerite and tetrahedrite. Brecciated clay-altered wallrock is evident in the vein.
A limonitic fracture zone less than 7 metres wide hosts the quartz and carbonate veins. Veins on surface are less than 5 centimetres wide and contain coarse sphalerite and galena within very coarse pink and white carbonate.
A grab sample of vein material assayed 950.0 grams per tonne silver, 3.8 grams per tonne gold, 1.28 per cent lead and 0.99 per cent zinc (Open File 1988-11).
The E.L., Silver Cup (Lot 6507), Moonlite, Evening Star, and Sun (Lot 6955) claims extend in a northeasterly direction along the strike of the vein outcrop. These claims lie near the western edge of a more or less rectangular block of 33 claims and fractional claims that is roughly 5 claims wide and 6 claims in length. All these claims were Crown-granted to D.H. Nellis, some in 1907, and the remainder in 1911.
Very little information is available on this property and it is not known when the claims were located. A 1911 report states that 3 men worked on the Sun claim from June to December and 2 cars of ore were sacked ready for shipment. In 1917 Mr. Nellis shipped 35 tons of ore, reported to be from the Sun claim (082FNW207). The main workings are on the Silver Cup claim. Here Mr. Nellis drove a crosscut in a westerly direction, about 30 metres below the outcrop, on the Woodbury side of the divide. The crosscut is 22 metres long and intersects the vein 10 metres from the portal. A winze has been sunk on the vein, and 4.5 metres below the adit level a sublevel has been driven on the vein to the north of the shaft for 10.6 metres. About 4.5 metres back from the face the stringer of galena has been underhand mined for about a metre. The winze is reported to be 14 metres deep with a 15-metre drift to the south off the bottom. This lower level was inaccessible when the workings were examined in 1949.
In 1940 J. Flagel of Ymir shipped 31 tons of ore from the Silver Cup. Three claims, the E.L, Silver Cup, and Moonlite, owned by Mrs. C.A. Nellis, were optioned to A.G. Neiman & associates late in 1949. The only work reported at this time was done on an access road to the property.
