The Tokumm Creek showing was staked in 1912 and limited exploration work, mainly for assessment requirements, had been reported. The work included trenching and driving a short adit. In 1915, about 9 tonnes of "lead ochre" ore were reported shipped to Trail from the Vermilion and Margaret claims.

Geological Survey of Canada Open File 481 indicates the area to be underlain by Cambrian to Devonian sandstone, shale and limestone.