McCombs MBA Organizations:

• All MBA Organizations

Must Sees:

• Supply Chain Management Centre of Excellence -- http://www.mccombs.utexas.edu/scm/ -- bringing together executives from leading corporations with Texas faculty and students to identify, document, research, develop and disseminate best practices in Supply Chain Management .
• The association for Operations Management -- http://www.apics.org/ -- the educational society for resource management, including forecasting, inventory management, operations planning, and so on.
• Project Management Institute -- http://www.pmi.org/ -- with 55,000 members worldwide, it's the leading nonprofit professional association for project management
• Project Management Institute in Austin -- http://www.austinpmi.org/ -- the local chapter
• Research that company you're interested in -- http://www.vault.com/

For future operations consultants:

• News by, for, and about consulting -- http://www.consultingcentral.com/

Fairly technical, but interesting:

• Operational Research Society -- http://www.orsoc.org.uk/
• Institute for Operations Management and the Management Sciences -- http://www.informs.org/

In the manufacturing arena:

• Supply chain extravaganza and more -- http://www.modforum.org/
• Here's one from the US government -- http://www.bmpcoe.org/ -- it provides interesting information on best manufacturing practices around the nation.
• A must for manufacturing maniacs -- http://www.manufacturingnews.com/ -- a bimonthly compendium of al the latest and greatest breaking news in the manufacturing world
• Networking, networking, networking with the National Association of Manufacturers -- http://www.nam.org/