This group of claims is located on Silver Spray creek, a south-east flowing tributary of Woodbury creek. A road, 4.8 kilometres long, was built to the property from a point on Woodbury creek, 14.4 kilometres from the Nelson-Kaslo highway. The property lies on the eastern edge of Kokanee Glacier Provincial Park.

During 1901-02 development work on the Baltimore group, then owned by Wm. English of Kaslo, amounted to a 43-metre tunnel on the vein and a 15-metre shaft.

The Baltimore claim was Crown-granted to G.H. Davison in 1903 and was operated through 1907 along with 5 other claims, the Chance Frac., Maple Leaf, Grafton, Foothill and Nipper. In 1930 English Bros. of Kaslo prospected the property but did not re-open the mine.

The mine lay idle from 1907 until 1952 when it was re-opened by Victoria Lines Ltd. of Calgary. This Company acquired the Baltimore claim; the Grafton and Maple Leaf Crown-granted claims optioned from W. English of Kaslo; the Granite Crown-granted claim leased from the Crown; the Connection and Foothill recorded claims leased from W. English; the C.K. group of 3 recorded claims. In 1953 about 47 metres of drift was completed. The property by this time had been developed by 5 adits between the 1830 and 1980 metre elevations. Most of the work prior to 1907 was done in the upper 3 adits, which are now largely inaccessible. No. 4 adit is a drift on the vein 3 metres long. No. 5 adit, 91.4 metres lower and 152.4 metres west of the upper workings, is about 69 metres long. The vein at the portal was about 27 centimetres wide but narrowed to a crack only about a metre inside.

Victoria Mines Ltd. was struck from the register in 1957.

Country rock is hornblende potassium feldspar porphyritic granite. Muscovite - biotite schists and psammite occupy sections of hangingwall and/or footwall of the vein.

The vein, which has been traced along the surface for over 100 metres, occupies a strong east-west, north-dipping shear structure. Mineralization includes pyrite, galena, plus or minus sphalerite, and silver minerals in a quartz gangue. A sample of the vein assayed 2600 grams per tonne silver, 1.1 grams per tonne gold, 1.24 per cent lead, 1.4 per cent zinc and 0.0577 per cent coppper (Open File 1988-11).

Intermittent production from 1902 to 1954 totalled 60 tonnes, yielding 352,025 grams silver, 31 grams gold, 5,609 kilograms lead and 131 kilograms zinc.