I was wrong. They only mentioned appx cost per ounce in news and on the website....and they haven't been dumb enough to do it for quite some time.
The SEC didn't like it when they estimated bulk tonnage. From an old filing:
Exhibit 99.1 1. We note your disclosure of bulk tonnage estimates in your exhibit 99.1 with respect to your Santa Elena property. Only proven and probable reserves may be disclosed in filings with the United States Securities and Exchange Commission pursuant to the Instructions to Item 102 of Regulation S-K. Please revise to remove the bulk tonnage estimates.