ID# 21.1
From: Johnny Ryall ([email protected]) - 18 Mar 1998
How do they get the cranes on top of the skyscrapers when they are under
constuction? And, then, how do they get them down?
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ID# 21.2 (reply to #21.1) - 18 Mar 1998
Lifting them upper gradually as the construction work progresses.
Dismantling and taking them down in pieces. ED.