The BNA occurrence is located east of Kyawats Creek, 750 metres south of its confluence with Keen Creek. Kaslo, British Columbia is about 20 kilometres to the northeast.

The BNA occurrence is covered by the BNA claim group, consisting of the BNA (Lot 5994), Humming Bird (Lot 5995), Onoka (Lot 5997) and Lynx Fraction (Lot 5996) Crown grants. The claims were Crown granted to the B.N.A. Mines Co. in 1904. The property was worked on a small scale from 1904 to 1911 and then lay idle until 1950. B.N.A. Mines Limited Liability owned the property in 1950. In 1950 and 1951, a small amount of surface stripping was done above the No. 6 adit and a raise was driven in the No. 6 adit, 62 metres from the portal. In 2013, Agave Silver Corp. examined the area as the Kaslo property

The occurrence occupies a narrow belt of Triassic Slocan Group metasediments within the Keen Creek reentrant. Metasediments, in order of importance, include argillite, quartzite, biotite schist, limestone and siltstone. Slocan lithologies are flanked by potassium feldspar porphyritic granite of the Middle Jurassic Nelson batholith and hornblende potassium feldspar porphyritic granite of the Middle Jurassic Mount Carlyle stock.

Mineralization occupies a bedding-parallel breccia lode structure. The strike of the lode is 045 degrees and the dip 85 degrees to the southeast. The lode width varies from 1.5 to 7.6 metres. Mineralization is chiefly argentiferous galena, sphalerite and minor native silver replacements of wallrock or open-space fillings in a calcite and minor quartz gangue.

Production records for the BNA occurrence indicate 173 tonnes of ore produced intermittently from 1900 to 1981. Recovery totalled 475,442 grams silver, 197 grams gold, 11,484 kilograms lead and 11,361 kilograms zinc.