The last company PR mentioning federal claims renewals was, I think, four years ago; the company since has provided regular updates on state land mining claims.  So, I checked one of my favorite sources for federal claims in the Tombstone area, and all looks good for now.

https://thediggings.com/vimining-districts/az419/map

Why did this come to mind?  Because I believe the federal claims are up for renewal this month or in early July.  Where will the money come from?  The paid promotion appears to have not shown results, the company has no partner, and it looks like the stock sales volumes are insufficient to interest the loan sharks who have helped keep the company alive for the last 3+ years. 

Continuing viability hangs by a thread.