British Columbia
Top level info: https://www2.gov.bc.ca/gov/content/industry/mineral-exploration-mining
Mineral titles branch: https://www2.gov.bc.ca/gov/content/industry/mineral-exploration-mining/mineral-titles
Mineral Titles Online: https://www2.gov.bc.ca/gov/content/industry/mineral-exploration-mining/mineral-titles/mineral-placer-titles/mineraltitlesonline/about-mto
MTO Map: https://www.mtonline.gov.bc.ca/mtov/map/mto/cwm.jsp?site=mem_mto_min-view-title&titleId=201320
Over 40000 titles active
Note: “Placer” minerals are alluvial stream bed mining