Array of low-background He-3 proportional counters for the Sudbury Neutrino Observatory de réir Amsbaugh, J, Anaya, J, Banar, J, Bowles, T, Browne, M, Bullard, T, Burritt, T, Cox-Mobrand, G, Dai, X, Deng, H, Di Marco, M, Doe, P, Dragowsky, MR, Duba, C, Duncan, F, Earle, E, Elliott, SR, Esch, E, Fergani, H, Formaggio, J, Fowler, M, Franklin, J, Geissbuehler, P, Germani, J, Goldschmidt, A