Ken Stone and Henry Evans-Tenbrinke camped out on the weekend on lawn chairs in front of three cement pedestals as part of a protest that began three weeks ago.
Their protest came in the wake of Hamilton police arresting another Mountain resident for a similar action and charging him with mischief.
Canada Post is replacing door-to-door delivery for 36,000 residents on the Mountain and in part of Stoney Creek with community mailboxes. The boxes were all expected to be ready Monday. A Canada Post spokesperson said last week that contractors would work through the weekend if necessary.
Stone, a well-known activist, said Sunday night that police came by on Saturday, about 75 minutes after the contractor had arrived and left.
"It looked pretty scary. I thought we were going to get arrested … It looked like they were trying to rendezvous with the contractor to put in the boxes, but that didn't happen."
Stone said police did not show up Sunday. He believes Canada Post will have to meet with the Canadian Union of Postal Workers to discuss the situation because it did not meet the July 20 service conversion deadline.