All changes to tower
| Date | Change | Source |
|---|---|---|
| 7 Dec 2019 | Frame Fr1: material amended,truss,layout added | Tim Jackson via e-mail |
| 6 Jul 2019 | 1,2: turning added | Tim Jackson via 00013520 |
| 7 Jun 2012 | 1-10: frame id added; frame info added | John Baldwin via database |
| 15 Apr 2009 | Wed PN: check beforehand | L&M 2008 Report via JCB |
| 15 May 2006 | Tenor nominal added (Eb+46c) | Andrew Higson via pNBR |