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1976 Bozeman,
MT 1977
Anaconda, MT 1978 Missoula,
MT 1979 Anaconda, MT 1980 Spokane,
WA 1981
Pocatello, ID 1982 Dillon,
MT 1983
Whitefish, MT 1984 Boise,
ID 1985
Bozeman, MT 1986 Moscow,
ID 1987
Helena, MT 1988 Missoula,
MT 1989
Dillon, MT 1990 Salmon,
ID 1991
Great Falls, MT 1992 Red Lodge,
MT 1993
Indiana U. Geol. Field Station, MT 1994 Cranbrook,
BC 1995
Dillon, MT 1996 Twin Falls,
ID 1997
Livingston, MT 1998 Lincoln,
MT 1999
Lewistown, MT 2000 Butte,
MT 2001 Wallace,
ID 2002
Virginia City, MT 2003 Missoula,
MT-Salmon, ID
2004 White Sulphur Springs, MT
2005 Choteau, MT
2006 Libby, MT
2007 Dillon, MT
2008 Red Lodge, MT
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