Berkeley Lab was founded in 1931 by Ernest O. Lawrence. Lawrence won the Nobel Prize in physics in 1939 for his invention of the cyclotron, which led to a Golden Age of particle physics and revolutionary discoveries about sub-atomic matter and the nature of the universe. It is located on a 200 acre site in the hills above the UC Berkeley campus, has a staff of approximately 4,000 employees and an annual budget of more than 20 million. Berkeley Lab enjoys a shared history and relationship with UC that is unique among the DOE national laboratories. More than 250 Lab scientists hold joint appointments with UC Berkeley and other UC campuses, and nearly 800 students, graduate and undergraduate, are employed each year.