This drawing was found in the attic of a member of staff. His family didn't know what to do with it so gave it to his neighbour saying "You work at Rutherford so we think this must be something to do with you." Quite by accident someone who knew the history of site saw it and realised the significance of the subject and of the artist Seton McConnell (Joan Fishenden), a local painter and illustrator. Needless to say the original frame was retained and the picture is now hanging in pride of place in one of the conference rooms.
See also:
An architect's drawing of the PLA (Proton Linear Accelerator) building, designed by GW Dixon (Southern Works Organisation UKAEA). This is hanging outside the Occupational Health/Health And Safety offices and classrooms in R12.
An architect's drawing of R1 before the Library Bridge was built.