By OGJ editors
HOUSTON, Jan. 23 -- TC PipeLines LP, a subsidiary of TransCanada Corp., appointed Mark Zimmerman as president. Zimmerman also will continue to serve as vice-president, business development, and vice-president, commercial transactions, for TransCanada.
Zimmerman succeeds Russ Girling, who will continue as TC PipeLines chairman and chief executive officer, and president, pipelines, for TransCanada.