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ASARCO Incorporated is one of the world´s leading integrated producers of cooper, as well as a producer of other metals, specialty chemicals and aggrgates.

Waste Management INC is the premier company in North America providing comprehensive waste management services. Based in Houston, the Company operates an unequalled network of service facilities throughout the United States, Canada, Mexico and Puerto Rico that serve more than 10 million residential customers and 1 million businesses

Environmental Management Systems, a comprehensive software system for environmental and safety compliance, management, planning and reporting. Chemical Safety announces partnership with Chemdex to offer regulated inventory management and compliance support in conjunction with online chemical procurement.

Chemical Online A community for industry professional. AIChE has entered into a cooperative marketing agreement with Chemical Online to provide enhanced news, technical information and value-added services to both AIChE's audience and the chemical engineering community.