Mining for knowledge Carleton University is leading the expansion of the Sudbury Neutrino Observatory to create a major underground particle astrophysics research site. Darryl Boyce talks to Gay Sutton about the challenges of undertaking construction and research in an active nickel mine. Carleton University, situated just a few miles from the center of Ottawa between the Rideau Canal and the Rideau River in Ontario, is an attractive site for academic study and research work.