David Bannister has joined Halcrow Yolles, the Toronto structural engineering firm, as senior principal. He is formerly a partner and vice president of structural engineering at MMM Group Ltd. and had been a partner with Carruthers and Wallace Ltd. Also joining Halcrow Yolles, in the role of senior associate, is Ken Sissalkis. He had been project engineer at Halsall Associates Ltd.
Lord, Aeck & Sargent, an Atlanta architecture firm, has promoted Benjamin W. Elliott to principal in its science studio, which specializes in the planning and design of scientific facilities, including academic, government and corporate research laboratories.