"Mine giant Grupo Mexico gains upper hand in Sonora : Asarco workers here worry that union losses in Cananea dispute could carry over"

http://azstarnet.com/business/local/article_413da48c-6854-5956-881f-5d70a8551b27.html

"CANANEA, Sonora - The Mexican conglomerate that owns Tucson-based Asarco LLC is winning a long labor conflict south of the border, a victory that could reverberate across North America....Arizona mining contractors, such as Tucson-based Modular Mining Systems, are benefiting from the re-opening of the massive mine by making sales there....This outsourcing of labor tells Bensusan, the Mexico City researcher, that Grupo Mexico is winning in its effort to undercut independent unions...."

ASARCO Denver CO site -- "assumption of environmental cleanup"

compare this clean-up with Superfund effort at Asarco E. Helena MT 

"Google alert
Colorado business park to get funds - The Denver Post
The 77-acre former Asarco property north of downtown is targeted for 1.1 million square feet of industrial development after it is cleaned up. ...
www.denverpost.com/commented/ci_16211013?source...
"

"After the site is cleaned up, Adams County will contribute $10 million to develop the site from a grant it received from the U.S. Department of Housing and Urban Development. .....Brownfield Partners reached an agreement with Asarco in 2006 to buy the property out of bankruptcy. At the time, it said it would redevelop the site as a high-end industrial business park.   ....Asarco valued the transaction at about $8 million, largely as a result of the liability transfer, assumption of environmental cleanup and decommissioning of the facility."