BERGE:

Not entirely, no

KOHN:

All right. Well, when Dr. Stone left the AEC and wentback to

his post at the UCSF as head of the Departmentof Radiology, a decision had
been made by the AEC to have a numberofnational laboratories. The AEC
was supporting Oak Ridge, Brookhaven, Argon and then on a very much
smaller scale, they decided that Stone should have a high-energy unit for
therapy in San Francisco. Dr. Stone chose the highest energy machine
possible with reasonable planning; the General Electric Co. had built a 70 MeV
synchrotron, and they would build him a second one. So a special building
was constructed to house the machine behind the main USCFbuildings;it

would also contain some laboratory space. Have youseenit?

BERGE:

No.

KOHN:

The Laboratory was completed around 1950-1951. The

synchrotron wasa very large machine; it had to be installed, made to work

reliably, and calibrated. Dr. Gail Adams cameto be the physicist in charge of
the machine, andhe also instructed the radiology residents in radiological
physics. Dr. Stone asked meif I would head thelittle radiation biology unit,
and I accepted. Of course, I was working there some years before the machine
wastreating patients. I had a small group of associates consisting of Bob
Kallman, who hasjust retired at Stanford, where he becamethe professor of

radiation biology.

BERGE:

Howdo youspell his last name?

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