http://www.proactiveinvestors.com/companies/news/44835/augusta-resource-is-an-attractive-takeover-target-jennings-capital-44835.html

To expand my further findings on Augusta.

Jennings analyst was comparing Rosemont to Pinto Valley.

" The recent acquisition of the nearby Pinto Valley copper mine bodes well for other Arizona copper projects, and using the $0.09/lb of Cu M&I resources paid for Pinto Valley, we believe Augusta could fetch $5.00 per share in an acquisition," Salmon noted.

This $5.00 per share would value Rosemont closer to $700 million.

There seem to be different number of this bid. I've found some articles that it's a $540 million bid whereas some are saying it's $440-470 million bid. I think it's because Hudbay owns 16% of Augusta.

Keep in mind that all these figures are without gold and silver production.