You can check all registered and past claims, as far as I know, on the Manitoba Government mineral resources website - GIS mapping.
http://www.gov.mb.ca/stem/mrd/index.html?/index.html
The map below shows claims around the Packsack area - I didn't name them all.
Beyond that to the south, no contigous claims are represented. Therefore.................do your diligence, and come to your own conclusions on all contributions here.