All changes to tower
| Date | Change | Source |
|---|---|---|
| 28 Jul 2011 | Notes, GF, u/r added (also: organ impedes fall of 2nd rope) | Andrew Marchant via pNBR |
| 1-3: nominal added | Andrew Marchant via 00009539 | |
| 26 Sep 2009 | 1-3: turning info added | John Baldwin via database |
| 1-3: frame id added; frame info added | Simon Ridley via e-mail |