The Slocan veins are situated on the east side of Nine Mile Mountain Peak, 15 kilometres northeast of Hazelton.

The property is underlain by sandstone, siltstone, shale, tuff and minor coal of the Middle Jurassic to Lower Cretaceous Bowser Lake Group. A 3-by-1–kilometre stock of coarse-grained granodiorite of the Late Cretaceous Bulkley Intrusions outcrops north of the showings.

There are four mineral showings on the Slocan property: West Slocan, East Slocan, Middle Slocan and Kootenay. They are all narrow, sulphide-rich veins with a quartz and, in some cases, a quartz-carbonate gangue. Jamesonite, sphalerite, galena and pyrite are the main sulphide minerals. The veins are generally shallow dipping and average approximately 10 centimetres in thickness, rarely reaching 50 centimetres in thickness. A representative grab sample from the Kootenay vein, taken by Kindle in 1940, assayed 337.8 grams per tonne silver, trace gold, 22.98 per cent lead and 14.57 per cent zinc (Geological Survey of Canada Memoir 223). Another sample taken from the 7 to 15-centimetre-wide West Slocan occurrence assayed 204.4 grams per tonne silver, trace gold, 12.32 per cent lead and 4.95 per cent antimony across 10 centimetres (Geological Survey of Canada Memoir 223).

The first discovery of silver-lead-zinc ore containing antimony was made on Nine Mile Mountain in 1908. In the years that followed, numerous other mineral-bearing veins were discovered in the area. Between 1910 and 1913, small shipments of high-grade silver-lead ore were made from 15 properties.

By 1981, the area was held by Sunrise Metals Corporation. As part of a joint venture agreement with Sunrise Metals, Westmin Resources Limited began work on the Sunrise property. That year, exploration consisted of geological mapping, rock sampling, soil geochemical surveying and trenching. Exploration continued in 1982 with an induced polarization and resistivity geophysical survey over the central portion of the property.

The ground lay dormant until 2005, when Cadre Capital Incorporated staked new claims over the Nine Mile Mountain area and the Sidina Creek area to the north as part of their Hazelton project. The following year, Golden Sabre Resources optioned the claims and carried out a limited exploration program of rock sampling and soil grid geochemistry. Between 2006 and 2012, the claims appear to have been dormant.

By 2012, TAD Mineral Exploration Limited (formerly known as TAD Capital Corporation) expanded their Sidina property to include additional claims covering the Nine Mile Mountain area to the south, formerly held by Cadre Capital. That year, Rio Minerals Limited conducted grid surveys and soil sampling near the Silverton occurrence (MINFILE 093M 038).