Ontario's Historical Plaques 

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Cobalt Teletherapy Unit

Cobalt Teletherapy Unit

Photos and transcription by contributor Wayne Adam - Posted September, 2011

Cobalt Teletherapy Unit

Plaque Location

The County of Middlesex
The City of London
At Entrance A of the London Health Sciences Center
(The London Regional Cancer Program entryway)
northeast of Commissioners Road East and Wellington Road

Coordinates: N 42 57.576 W 81 13.660


Plaque Text

In 1951 Canadian scientists, here and in Saskatoon, opened a new front in the battle against cancer. Through a pioneering partnership, the two teams of physicists, physicians and engineers, working independently yet cooperatively, designed the Saskatoon and the Eldorado (London) cobalt teletherapy units. Both became prototypes for the first commercially available units, then called "Cobalt Bombs", which allowed gamma radiation to be focussed directly on cancerous cells. Decades of effective worldwide use have proven the dependability of these units.


London Plaques

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