Note to Professor Mallard entitled 'Re: Supercons' Handwritten note to Professor Mallard entitled 'Re: Supercons' from Linda E. about the various costs of different grades of superconductors from Oxford Insruments and mentions Dr J Hutchison's caution about buying new equipment before full testing was completed. Professor Mallard has added a susequent handwritten note in red pen stating " The cost must be why we never went into supercon for Mark II and Jim's caution!". This is the original handwritten note. 6 March 1981