• Onyx Waste Services, Milwaukee, Wis., has promoted Mark Dennis to vice president of sales and marketing.

  • SWANA, Silver Spring, Md., has announced the following staff changes: Liesl Robinson has been promoted to director of meetings and expositions; Jamie Britto has been hired as technical programs coordinator for the Technical Divisions Department; Cathy Wilde is now director of administration; and Liz Garavaglia is now program manager of marketing communications.