Sandridge is hosted in the Winston Lake Greenstone Belt (“WLGB”) within the northern part of the Wawa terrane of the Archean-age Superior province. The WLGB hosts three past-producing mines: Zenith, Winston Lake and Pick Lake. Approximately 180,000 tons at 16.6% zinc was mined at the Zenith mine between 1966 and 1970. Past production at the Winston Lake mine was approximately three million tons at 14.1% zinc and 1.0% copper. Past production at the Pick Lake mine was 172,956 tons at 9.9% zinc and 0.7% copper. Mining operations at Winston Lake and Pick Lake ceased in 1998 due to poor metal prices. All three deposits are classified as bimodal-mafic volcanic-hosted massive sulphide-type. Historical geophysical and geochemical data suggest that the favourable WLGB stratigraphy hosting the Winston Lake and Pick Lake extends approximately 8 km northwest into the Sandridge project area. 

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Golden Share received the Exploration Permit to drill at Sandridge.