Port of Montreal say they are at an impasse with striking dockworkers, contradicting the federal labour minister’s upbeat assessment of talks as the port shutdown hit day 10.Martin Tessier, head of the Maritime Employers Association, told reporters Wednesday that “negotiations are not really progressing” and characterized any progress as “very slow.”The remarks follow Labour Minister Filomena Tassi’s depiction of “encouraging progress made between the two parties” this week, an appraisal that backs Ottawa’s decision to avoid intervening despite pleas from industry groups and the Ontario and Quebec governments.Tessier says he has asked the union to move 477 containers out of about 11,500 now on the waterfront in order to clear essential.