You can search for the coordinates

 52 45' -86 18'

and you see some green and some water. Not very helpful imo.

 Or you try (thanx to Fantomas on the German board)

http://www.mndm.gov.on.ca/mndm/mines/lands/claimap3/disclaimer_e.asp

which leads you to a map viewer of current stakes anywhere in Ontario.

Search by claim number: 3012264

In the left toolbar, click on the symbol "Green C" (below the white Hand) called "Identify Claim" , then click on any Claim.

On bottom left, you get the claim number and "Link to MCI System"

Click on the "Link" button.

 Then you get all information about the staker.