194         CONTRIBUTIONS    TO    ECONOMIC   GEOLOGY,    1907,   PART   II. 
The  Barrett  mine,  owned  by  the  Montana  Fuel  and  Iron  Company 
and  operated  by  the  Barrett  Brothers,  of  Joliet,  is  located^n  the  NW.  J 
SW.  i  sec.  25,  T.  4  S.,  R.  22. E.,  about  2  miles  south  of  Joliet.  The 
coal  output,  which  does  not  exceed  40  tons  per  day,  is  hauled  in 
wagons  to  the  railroad  at  Joliet.  The  strike  of  the  rocks  here  is  N. 
5°  E.  and  the  dip  5°  W.  The  following  section  was  obtained  in  the 
mine  about  250  feet  from  the  mouth: 
Section  of  coal  bed  in  the  Barrett  mine. 
Sandstone.  Ft.    in. 
Coal 2 
Bone  and  dirt 10 
Bone 11 
Coal 1     2\ 
Bone 6 
Coal....: 1     2 
Shale. 
Total  coal 2     G\ 
A  shaft  is  being  sunk  in  the  SE.  \  sec.  23,  T.  4  S.,  R.  22  E.,  with 
the  intention  of  reaching  the  Bridger  coal  bed.  The  location  has  the 
advantage  of  being  nearer  the  railroad  than  the  two  mines  last  de- 
scribed. Two  other  openings  are  located  in  the  NE.  \  NE.  \  sec.  26, 
T.  4  S.,  R.  22  E.,  but  owing  to  the  thinness  of  the  coal  bed  they  were 
abandoned.  The  small  mine  one-half  mile  south  of  Joliet,  on  the 
south  bank  of  Rock  Creek,  was  abandoned  for  the  same  reason.  It 
is  several  years  since  mining  was  carried  on  here  and  the  slope  is 
caved.  In  the  NE.  \  NE.  \  sec.  23,  T.  4  S.,  R.  22  E.,'  brick-colored 
fragments  of  sandstone  point  to  a  burning  of  the  coal  bed.  Clinkers 
due  to  the  above  cause  are  rare  in  this  field. 
From  Joliet  northward  the  strike  of  the  rocks  is  north  and  south; 
the  dip  immediately  north  of  Joliet  is  4°  W.,  but  decreases  to  2°  near 
the  north  line  of  the  township.  About  a  mile  north  of  Joliet  an  old 
caved-in  prospect  was  found,  said  to  have  produced  coal  at  one  time. 
It  is  the  intention  of  the  Barrett  Brothers  to  reopen  this  if  possible. 
The  only  prospect  north  of  Rock  Creek  where  a  section  could  be  ob- 
tained is  located  in  the  SW.  \  NW.  \  sec,  1,  T.  4  S.,  R.  22  E.  The 
section  is  as  follows : 
Section  of  coal  bed  2\  miles  north  of  Joliet,  in  sec.  1,  T.  4  S.,  R.  22  E. 
Sandstone  roof.  Ft.  in- 
Coal 1     7 
Clay 1 
Coal,  bony 6 
Shale. 
Total  coal 2     1 
