Probably the concrete reinforcing.

"Bob Miller" wrote in message
...
On 7 Aug 2003 16:08:25 -0700, (Art Unwin KB9MZ)
wrote:


What keeps the 32' mast from breaking out of the Coke bottle in the
first wind? (I don't think they construct Coke bottles like they did
in the old days with the thick, green glass.)

Bob
k5qwg