Pentacon promoted Michael Herrmann to vice president of U.S. sales in its industrial group...Earnest Machine Products Co. appointed Patricia A. Anderson to quality system (ISO) manager in its Midwest division...David Schreve has joined Purchased Parts Group, Inc. as the vice president and general manager of the traditional business unit, and Randy Ladutko has been named to the position of vice president of sales and marketing for the programs and service division. Also, John Cantu was named vice president and general manager of Mexico operations, and Robert Mahler has been named vice president of quality...Marmon/Keystone Corp. appointed Kirk Liepold as account manager for the counties of San Diego, Orange, and a portion of Los Angeles County, and Ruben Franco to inside sales/quality control coordinator...Faster, Inc. announced the addition of Ken Gordon as its new territory manager in charge of Texas, Oklahoma, Arkansas, Colorado, Utah, Arizona and New Mexico...Motion Industries promoted David Tallant to national manager for linear motion control products...Airgas named Bob McCaughlin as its new controller...Cameron & Barkley and Tristate Electrical & Electronics Supply Co. appointed Stephen R. Hartkopf to the new position of director for manufacturer alliances...Paul Schinner has been promoted to general manager of the St. Louis branch of Bunzl Distribution USA, Inc., and Jeff Firnett has been promoted to general manager of Bunzl Albuquerque...

American Pneumatic Tool announced that its president, Al Jacobellis, has retired...Drives, Inc. appointed Gene Narducy as a regional sales manager in the southwestern U.S...Triumph Twist Drill hired Brent White as the new eastern regional sales manager and Mike Hagen as the new western regional sales manager...Steve Petrakis, vice president of sales and marketing for ACS Group's Sterling, Inc. division, is now also responsible for day-to-day sales activities and marketing programs of ACS Group's industrial markets division...Hoover Materials Handling Group, Inc. named Douglas Richard Silverman as marketing manager of its asset product line and rental business...Acme Cryogenics appointed Brian Harrison to sales manager of national distributor accounts...

Supplystream Inc. appointed Robert K. Fleischmann president...fourthchannel promoted Michael Morgan to vice president of marketing...Proficiency appointed Scott A. Berkey to president and CEO.