Sept 5 (Reuters) - Enbridge Inc ENB.TO :
* ENBRIDGE PROVIDES UPDATE ON CANADIAN MAINLINE OPEN SEASON PROCESS
* ENBRIDGE INC, ON CANADIAN MAINLINE, SAYS "BELIEVES THAT ITS OPEN SEASON IS ENTIRELY APPROPRIATE"
* ENBRIDGE INC - LETTERS SUBMITTED TO CER TODAY INDICATE SUPPORT FOR CONTRACT CARRIAGE ON MAINLINE