Wesley, these are not direct "comparables" until proven by drilling, but are comparable for the present based upon geophysics.
Various communications from the company - not all in press releases - have compared the geophysical signatures from Hay Mountain to those of some of the largest present day and historical copper mining projects in the West. The "footprints" have been found to be similar to Hay Mountain as have the "mix", or potential mix.
The likely comps include Bingham Canyon (Utah, Rio Tinto/Kennecott), Mission-Pima (Arizona, ASARCO), Bisbee (Arizona, historic/closed), Rosemont (Arizona, under development and recently sold to HudBay Minerals for the equivalent of C$555 million), and Buenavista del Cobre, near Bisbee in Sonora, Mexico (Southern Copper).
Here's one place to see what I'm talking about.
http://www.libertystaruranium.com/2014/01/30/nr-172-liberty-star-hay-mountain-project-update-geophysics-geochemistry-completed-s-1-approved-drill-plan-underway/
Look also at some of the illustrations on the company Web site.
Hope this helps.
Happy Veteran's Day!
VP in AZ