The Happy Medium property is located near the head of Van Tuyl Creek, 7 kilometres north-northeast of Slocan. Access is by road 1.5 kilometres east from the Slocan highway.
The Happy Medium property consists of the Happy Medium (Lot 5558), Velvey, International and Eclipse No. 2 Crown granted claims. Little is known about this property other than it is underlain by Nelson granite or mineralized crushed compositionally equivalent units.
Shipments of ore made in 1905 and 1906 amount to 12 tonnes grading 10 grams per tonne gold, 5,588 grams per tonne silver and 8.4 per cent lead.