All changes to tower
| Date | Change | Source |
|---|---|---|
| 20 May 2020 | fr1: material amended | Tim Jackson via e-mail |
| 20 Feb 2019 | 1,2: diam added | David Sloman via 00013307 |
| 3 Sep 2018 | 3-8: diam added | David Sloman via 00013070 |
| 21 Oct 2014 | fr1: material amended | John Baldwin via database |
| 6 Jul 2013 | Indication added that twr notice shows 5,8 as 1963, cf pNBR | Philip Denton, CJP, JCB via JCB |
| 30 Aug 2012 | 1-8: partials,frameid added; 3-8: canon info added | Philip Denton via 00010058 |
| frame info added | Philip Denton via 00010058 |