All changes to tower
| Date | Change | Source |
|---|---|---|
| 28 Oct 2019 | frame: material amended,truss added | Tim Jackson via e-mail |
| 7 Oct 2017 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 6 Aug 2012 | Tenor note amended; nominal: F-9c | Nick Bowden via pNBR |
| 6: nominal added | Nick Bowden via 00010034 | |
| 25 Feb 2012 | 6: historically important | David Knight via e-mail |