Hey Dick, here's all I can find, from Marconi: Companies and Their People, Vol. 18 No. 11 (June 1968), p. 1 (link)

Since the last report on Goonhilly there has been rapid progress in the erection of the revolving aerial structure of the huge new earth station being built by Marconi for the British Post Office.

The spate of concreteing operations which followed each other in quick succession were handled with a swing, and this chorus to the music of the mixers resounded on the site as knee bent to shovel:

Shovel up cement, shovel up sand, let them overflow
Shovel and swing the chippings in, to make the mixer go ...

The chorus rang as the first 45 tons of mixture was poured into the boxes on Saturday, 4 May, ready for the trial run to elevate the now almost completed reflector backing structure.