The Sudbury Neutrino Observatory is a neutrino observatory located 2000 meters underground in Vale's Creighton Mine near Sudbury, Ontario, Canada. It is designed to detect solar neutrinos and other neutrinos from cosmic sources. The observatory consists of a large
From Wikipedia
The Sudbury Neutrino Observatory (SNO) was a neutrino observatory located 2100 m underground in Vale's Creighton Mine in Sudbury, Ontario, Canada. The detector was designed to detect solar neutrinos through their interactions with a large tank of heavy water.