The removal by a salvage ship and seven tug boats took about 40 minutes.
He added, though, that almost all the removal took place on weekends, when students were not in class.
That kind of thing only happens if the removal takes place before puberty.
Debris collection and removal should take two to three weeks, city officials said.
It indicates removal of the track took place during 1966.
Dismantling and removal took six months and was carried out by three men.
The removal of a ring takes three minutes and functions as a plot point.
The removal of unwanted trees, shrubs and weeds took almost a year.
The removal can often be done under local anaesthetic, and take less than 30 minutes.
He said the removal took four or five days and was not done overnight.