Which mine was in production longer, Beaulieu Mine or Ptarmigan and Tom Mine? 
Ptarmigan and Tom Mine:  The mine first produced between 1941 and 1942 but closed due to wartime restrictions. Beaulieu Mine:  It entered production in October 1947, but by the end of November only 7 troy ounces (220 g) of rough gold were recovered.
i don't know