Adding to JB's comments about Tombstone Exploration's former Zebra claims, now held by LBSR, I recall when TMBXF flew ZTEM over their claims in the Tomstone area.  This was months before LBSR was able to do the same over their own claims.  Results for TMBXF very strongly suggested the presence of more than a few deeply buried copper porphyry desposits at multiple locations, including the Zebra claims next door Hay Mountain, ...and almost on top of the line separating these companies.  [Location maps for TMBXF targets found by ZTEM used to be available on their Web site.]

Long story short, TMBXF gave up all of their claims in the area, because they could not generate the funds for deep drilling, though they held on as long as the could.  As the Zebra project has been rolled into the Hay Mountain project, it means LBSR has at least two deeply buried copper porphyry targets - as suggest by ZTEM - in exceedingly close proximity.

Note that "deeply buried" in the case of the original Hay Mountain claims may no longer apply given findings from more recent field work and geophysics.   

Long ago I suggested that Hay Mountain and Zebra projects sharing borders could create potentially serious and expensive conflicts without having some form of agreements to share roads and other facilities.  Now, what could have been "road blocks" have been eliminated, ones seemingly caused by TMBXF failure to understand that they could have been able to exploit Carlin-style mineralization at or near the surface.  In other words, they may not have needed deep drilling to get started.  

VP