Stephen L. (Steve) Yellin is Regional Director, Advanced Technology at Lockwood Greene Engineers, past president of the IEST, and a charter member of the A2C2 Editorial Advisory Board. Contact Steve at 4201 Spring Valley Road, Ste. 1500, Dallas, TX 75244; 972-778-0239, fax 972-960-2070; syellin@lg.com. Contact Doug Hodge, President and Co-founder, SemiCHASE Systems, Inc., 2600 Technology Drive, Ste. 100, Plano, TX 75074; 972-423-9038, fax 972-422-5166; doughodge@semichase.com. Contact Matthew (Matt) J. Hearon, Semiconductor Grades H2O2 Unit Manager, Solvay Interox, Inc., 3333 Richmond Avenue, Houston, Texas 77098; 713-525-6500, fax: 713-307-3924;