All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 Aug 2023 | Frames Fr1, Fr2A, Fr2B: truss, layout added | Malcolm Taylor |
| 30 Jun 2022 | 6b: weight amended | Whitechapel records via David Sloman |
| 24 Dec 2010 | 8: date amended; fr1: date amended; 6b: frame id amended; | Alan Hodges via 00009030 |
| fr2A: details added; fr2 re-designated 2B | Alan Hodges via e-mail | |
| 12 Dec 2004 | PN is NOT Mon | David Bishop via e-mail |