A team of high-angle specialists has chipped off some of the giant ice sheets coating the northeast section of the CN Tower.
The Toronto Star says the team carried out the mission by dangling from the tower's Sky Pod observation level, 447 metres in the air.
The specialists first examined the ice formations at 11 p.m. Tuesday night before they carefully and slowly chipped away loose portions.
The remaining ice is about one-quarter to one-half-inch thick, Jack Robinson, Chief Operating Officer of the CN Tower, told the newspaper.
Robinson said they chose to perform the work late at night because there would be fewer people in the area, cutting the risk to the public.
Ice chunks that fell off the 553-metre structure caused road closures in the area and shut down the busy Gardiner Expressway for about 24 hours at the start of the work week.
The closures meant gridlock and headaches for frustrated commuters.
Officials were stumped as to how to rid the ice from the tower. It was the first time since 1976 -- when the CN Tower was finished -- that the structure has seen such an ice buildup.
Warmer temperatures later in the week are expected to melt the remaining ice.
Meanwhile, roads beneath the CN Tower are still closed.
