"^*Tr*" 



■ 



a) Aerial view of Aufels Creek middle mined study area, 21 

 July 1977. 



b) Aufeis Creek upper study area where surface flow disap- 

 peared for three years, 22 July 1977. 



Figure 54. Region where Aufeis Creek went subsurface creating 

 migration blockage due to lack of surface flow. 



183 



