142         CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,    1907,    PART   II. 
A  coal  bed  near  the  same  geologic  position  was  noted  in  the  east 
bluff  of  Tongue  River,  near  the  center  of  the  W.  §  sec.  21,  T.  58  N., 
R.  83  W.     A  section  follows: 
Section  of  coal  on  Tongue  River,  in  sec.  21,  T.  5S  N.,  R.  S3  W. 
Ft.    in. 
Sandstone 7 
Coal 4 
Sandstone 1 
Shale 1     6 
Coal 10-12 
Base  of  coal  concealed. 
Total  workable  coal 10-12 
ROLAND    COAL    BED. 
The  coal  next  above  the  Smith  coal  bed  has  been  mined  for  domes- 
tic use  in  sec.  25,  T.  57  N.,  R.  84  W.,  by  Mr.  Roland.  In  August, 
1907,  one  entry  was  abandoned  and  the  roof  had  fallen.  Another 
has  been  driven  about  60  feet  on  the  upper  7  feet  6  inches  of  the  coal. 
Across  the  gulch  a  complete  section  of  the  bed  is  exposed,  showing  13 
feet  of  workable  coal. 
The  Roland  coal  bed  seems  to  thin  out  toward  the  south,  like  the 
Dietz  coals.  A  coal  bed  2  feet  thick,  which  appears  to  be  equivalent 
to  the  Roland  bed,  has  been  prospected  near  the  northwest  corner 
of  sec.  11,  T.  56  N.,  R.  84  W.,  one-fourth  mile  east  of  the  Smith 
mine. 
COAL    BEDS    OF    DOUBTFUL    STRATIGRAPHIC    POSITION. 
A  coal  bed  in  about  the  position  of  the  Roland  coal  has  been  mined 
for  local  use  on  Badger  Creek,  near  the  northeast  corner  of  sec.  29, 
T.  58  N.,  R.  82  W.  A  drift  30  feet  long  has  been  driven  on  6  feet 
of  coal  in  the  center  of  the  bed,  which  is  9  feet  thick.  The  bed  here 
seemed  to  be  homogeneous. 
A  coal  bed  similarly  situated  stratigraphically  is  exposed  at  two 
places  on  Hanging  Woman  Creek.  One  is  near  the  south  line  of  sec. 
22,  T.  58  N.,  R.  79  W.,  and  the  other  near  the  northwest  corner  of 
sec.  3,  T.  57  N.,  R.  79  W.  The  section  of  the  bed  at  both  exposures 
is  as  follows: 
Section  of  coal  bed  on  Hani/iru/  Woman  Creek,  in  sec.  22,  T.  5S  N.,  R.  79  W. 
Ft.  in. 
Sandstone,  white 25 
Coal 1  3 
Shale 2 
Coal '. 1  7 
Shale 1  10 
Coal 11  2 
Shale,  carbonaceous. 
Total  workable  coal 11     2 
