Camfil Farr Air Pollution Control (APC), a leading producer of industrial dust and fume collectors, has introduced a new technical seminar program focusing on how to understand and maintain dust collection systems for optimum performance. Free programs will be offered throughout the year at the company’s Jonesboro, Ark. headquarters and its new regional offices in Los Angeles, Calif., Lincoln, Neb., Charlotte, N.C., Dayton, Ohio, Dallas, Texas and Gurabo, Puerto Rico. Camfill Farr APC, www.farrapc.com., (866) 669-6750.