The Holliday (Discovery) occurrence is located between Alan and Freer creeks, about 600 metres south of the Yukon-British Columbia border.

The Discovery quartz vein occurs in sheared granodiorite or quartz monzonite of the Early Cretaceous Cassiar batholith. The vein trends northeast and is paralleled by mafic dikes up to 1 metre wide. Mineralization consists of galena, sphalerite and pyrite. An alteration envelope, locally up to 30 metres wide, includes chlorite, sericite, kaolinite, quartz and pyrite. According to Abbott (1983), mineralization is Tertiary in age.

A 14-tonne shipment in 1979, from the Pit (104O 017) and Discovery veins, assayed 1.30 grams per tonne gold, 532.01 grams per tonne silver, 29.1 per cent lead, 13.9 per cent zinc and 0.16 per cent copper (Department of Indian and Northern Affairs, 1983).

Inferred reserves are 36,287 tonnes grading 427.2 grams per tonne silver, 14.95 per cent lead and 20.78 per cent zinc (George Cross News Letter No.43, 1983).

Lead isotopic signatures from the Lucky vein (104O 033) located about 6 kilometres east, plot in a cluster with other local polymetallic occurrences of known mid-Cretaceous through Eocene age. Abbott (1984) has related the veins and replacements of the Rancheria district to small granites that post-date the main Cassiar batholith (Fieldwork 2000, page 62).

In 1947, the Holliday-Discovery property was located and also covered the Holliday-Shipment (104O 002) and Pit (104O 017) ground. In 1948, M.K. Pickard, for the Yukon Ranges Exploration Syndicate, built a trail to the claims. A portable gasoline drill was used to mine 4.5 tonnes of ore from the Shipment vein. This was sacked, packed out to the highway on horseback, and shipped to the Trail smelter. The option was relinquished at the end of the 1948 season, and no work was done in 1949. The Discovery vein is the widest showing, but no work has been done on it because of its almost inaccessible location. It is on the north side of a steep slope, about 6 metres below the peak of the mountain. In 1979, B. Poulin built a road to the Switchback, Chinese Trench and Pit prospects, and on to the

Willy claims. That same year Poulin trenched the Switchback vein and dug the Pit prospect. From these operations a 14-tonne shipment of hand-cobbed ore was made to Cominco's Trail smelter.