All changes to tower
| Date | Change | Source |
|---|---|---|
| 6 Sep 2013 | Note added re 5th being cracked | TimJ (DrL info) via e-mail |
| 5: is cracked | Tim Jackson via e-mail | |
| 7 May 2012 | 1-6: frame id, turning added; frame info added | John Baldwin via database |
| 5 Jan 2004 | URL amended | Dickon Love via e-mail |