Joseph Martyak assumes chief of staff position at US Consumer Product Safety Commission (CPSC), Washington, DC, replacing Quin Dodd, who leaves agency on 1 October 2008 to join consumer product safety practice group at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, PC, Washington, DC; Martyak previously served as counsel to Nancy A. Nord, acting chairman of CPSC… Three employees earn promotions at aluminum cansheet manufacturer, Alcoa, Pittsburgh, PA: 28-year veteran Kurt Waldo becomes vp/general counsel; Jake Siewert, new vp of Business Development, Public Strategy also continues to handle Alcoa’s worldwide government affairs, serve on company’s senior leadership council; William J. (Bill) O’Rourke steps into role of vp for Sustainability, Environment, Health, Safety after serving as global business services vp/cio…