2005 - Major remediation of Asarco’s operating site begins upon TCEQ approval
2005 - Asarco files for bankruptcy protection under Chapter 11 of the Bankruptcy Code
2004 - Plant placed on care and maintenance status
2002 - Remediation engineering plan and design for operating site submitted to TCEQ for approval
2001 - Obsolete facilities, zinc plant and bag house, demolished
2000 - Storm Water Reuse and Conservation System Completed at a cost of $19 million
1999 - Plant placed on care and maintenance status
1996 - Upgraded capacities at two acid plants
1994 - Stainless steel reactors installed
1993 - CONTOP technology installed to increase production and reduce sulfur emissions
1985 - Lead plant operation suspended
1982 - Zinc plant shut down
1979 - Sinter plant installed at a cost of $18.5 million
1978 - Ore unloading and handling facility installed for $24 million
1978 - Second acid plant installed for $15.5 million
1972 - Acid plant installed at a cost of $6.7 million
1948 - Zinc plant installed at a cost of $5 million
1911 - Copper smelter added at a cost of $300,000
1899 - Smelter becomes part of American Smelting and Refining Company
1887 - El Paso lead smelter founded by Robert S. Towne
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