02/06 03/08 04/07 



New logger S/M213620 TEMP/RH 



05/07 



06/06 07/06 

 S/N 213620 



Figure 1. Mine temperature of the McDonald Mine East Adit (shallow location), Lake County, 

 Montana, from December 1998-July 1999. Electronic data recorder was 39.7 m from the 

 mine portal. 



