Bighorn Development Corporation reported high gold values from two rock samples occurring in their Corey 36 and Corey 39 claims. The samples are located just over 2.0 kilometres east of the South Unuk River at 914 and 1200 metres elevation. The lower sample contained 54.17 grams per tonne silver and the higher sample, located about 750 metres to the northwest in a gossan zone, contained 6.10 grams per tonne gold and 61.71 grams per tonne silver (Assessment Report 17404). Sample descriptions were not reported.

The area is underlain primarily by volcanic breccia, conglomerate, sandstone and siltstone of the Middle Jurassic Salmon River formation, Hazelton Group (Assessment Report 30131). The northwest contact of the Eocene Lee Brant Stock occurs within a few kilometres to the southwest of the showings. The stock is composed of massive, coarse to medium-grained, pinkish quartz monzonite.

The Corey South occurs on the Corey property of Eskay Mining Corp. Please refer to Cumberland (104B 011) for details of past work on the greater property.