All changes to tower
| Date | Change | Source |
|---|---|---|
| 28 Apr 2011 | 1-5: turning amended; frame: truss, layout added | Andrew Higson via e-mail |
| 27 Apr 2011 | 1-5: turning, frame id added; 5: date amended | Philip Denton via 00009272 |
| 11 Feb 2007 | Tenor nominal added (Ab-41c) | Auto added via pNBR |