All changes to tower
| Date | Change | Source |
|---|---|---|
| 21 Aug 2012 | 1,2,4,6: frame id amended; fr1,fr2: material amended | Mark Walker via e-mail |
| 20 Aug 2012 | 10: welded; 1-10: frame id added; frame info added | Philip Denton via e-mail |
| 8 Nov 2004 | Tenor nominal added | Bill Hibbert via e-mail |
| 1 Jan 2004 | Augmented from 8 | Keith Anderson via e-mail |