The Myrtle group of claims, consisting of the Alma (Lot 6516), McBride and Howie claims, is near the head of Memphis Creek, elevation 1650 metres, 6 kilometres northeast of Slocan City. Access is by the Memphis Creek road, 2.5 kilometres east of the Slocan highway.

The property was developed in the years 1901 to 1907, and intermittently from 1907 to 1966. Ore shipments made in 1907, 1935 and 1966 totalled 60 tonnes containing 75,425 grams of silver, 539 kilograms of lead and 907 kilograms of zinc.

The country rock is porphyritic Nelson granite that is bleached and silicified adjacent to the vein. The vein is in a sheared and brecciated zone that strikes 040 degrees and dips 35 to 40 degrees southeast. A crosscut adit driven easterly at 107 degrees on the 100 level encountered 160 metres of this zone. A small pegmatite dike, a felsic dike and several shears are also exposed in this crosscut. On the 50 level, small lenticular masses of quartz and calcite with pods of sulphides occur within a 26-metre section of the main shear. Galena, sphalerite, some chalcopyrite and a minor amount of tetrahedrite and native silver (?) are the principal ore minerals.

The Alma and McBride claims were held by J.E. Tatersall in 1924; the property was held by R.F. Ainslie during the period 1935-41. Development work to this time consisted of: a 158-metre long crosscut adit and from the end of it 35 metres of drifting on the vein; a 30-metre deep shaft and from the 15-metre level a 21-metre long crosscut to the vein from which an 26-metre drift was run to the south.

Silver King Mines Ltd. began exploration work on the property in 1965. The company name was changed in November 1965 to Kirsch Silver Mines Ltd. A vein sample taken in 1987 assayed 179 grams per tonne silver, 0.0308 per cent copper, 1.53 per cent lead and 4.8 per cent zinc (Open File 1988-11).