In the spring the “Mecca of the caffeine addicts,” the Coffee Shop, was
appropriated by the army, and with it the “last vestige” of peacetime campus
life.
26
In the short time that George had been at Chicago, the university had
undergone momentous changes. It had shifted from support from endowment to
tuition fees, from individuals to corporations, from private donors to government
funding. By 1944, 198 federal contracts had been executed, all on a not-for-profit
basis. The university budget had tripled. Civilian enrollment was down 30 percent
from the prewar level, and the normal ratio of three men to two women had
reversed itself, and worse.
27
But things were beginning to change. With America already well mobilized,
university training programs across the country began to close one by one. As the
G.I. Bill came in, the army units went out, and regular university life at Chicago, it
seemed, was actually returning to normal.
Or so people thought. In truth enormous resources were now being spent on a
top-secret underground project. In 1939 Albert Einstein had sent a letter to
President Roosevelt, urging him to call upon the nation’s resources to develop
atomic weapons to fight the Nazis. Roosevelt complied, and within a year
scientists at Cal Tech and Columbia had theoretically demonstrated the awesome
explosive potentials of the isotope uranium 235 and an element just recently
discovered called plutonium. Soon after Pearl Harbor a group led by the Nobel
laureate Arthur H. Compton was set up by the government for consolidating
plutonium research at Chicago. The outfit, called the Metallurgical, or “Met,”
Lab, was the cover given to Compton’s facility, and it was tucked away behind
the ivy-covered sandstone facade and glistening rectangular windows of
unassuming Eckhart Hall.
28
The Manhattan Project charged Compton with producing chain-reacting “piles”
of uranium to convert to plutonium, with finding ways to separate the two, and,
ultimately, with building an atomic bomb. As George had been innocently taking
his undergraduate Organic Combustion Analysis and Differential Equation
examinations, Glenn T. Seaborg and his team at the university secretly isolated
the first weighable amount of plutonium from uranium, irradiated in cyclotrons.
But there was still the business of building uranium-and-graphite piles (later
called reactors) that could be brought to critical mass in a controlled,
self-sustaining nuclear reaction. When a labor strike prevented such work at a
designated laboratory at the Argonne Forest thirty miles southwest of Chicago,
the famed Italian physicist Enrico Fermi, together with Martin Whittaker and
Walter Zinn, set out to build a pile in a squash court under abandoned stands in the
west wing of Stagg Field. The pile was a crude construction, made of black bricks
and wooden timber, but, miraculously, it worked. On the bitterly cold day of
December 2, 1942—unknown to George, his fellow students and professors at
Chicago, and practically everyone else in the world—the pile went critical at 3:53
in the afternoon. The nuclear age had dawned.
29