Are diamonds really forever?

An experiment to determine the ultimate stability of matter

Proposal sent to the Department of Energy in May, 1979

The detector "pool" was filled with 2.5 million gallons of ultra-pure water
The six sides were covered with 2048 photomultiplier tubes

Figures above are from the University of Michigan Research News (July, 1981)

Most of the original IMB group in WASHINGTON D.C. (April,1980)