Conversation so far:
What did Shockley's semiconductor do?
The company, a division of Beckman Instruments, Inc., was the first establishment working on silicon semiconductor devices in what came to be known as Silicon Valley.
What year was the semiconductor made?
In 1956.
Did he win any awards for this?
Nobel Prize in 1956.
Who did Shockley work with?
In late 1957, eight of Shockley's researchers, who would come to be known as the "traitorous eight".

Question: Why were they called that?
Self-contained rewrite: Why were Shockley's researchers called traitorous eight?