SHERIDAN    COAL   FIELD,    WYOMING.  141 
SMITH    COAL    BED. 
The  Smith  coal  bed  is  exposed  in  the  hill  1  mile  southeast  of  Dietz 
and  was  being  mined  in  the  NE.  \  sec.  10,  T.  56  N.,  R.  84  W.,  and 
hauled  to  Sheridan.     A  section  in  this  mine  follows: 
Section  of  coal  at  Smith  mine,  injec.  10,  T.  56  N.,  R.  84  W. 
Shale,  blue.  Ft.      in. 
Shale,  carbonaceous 5 
Coal,  bony 6 
Coal 4       11 
Shale,  blue l-f- 
Sandstone,  white 20 
Total  workable  coal 4       11 
The  section  of  coal  at  the  outcrop  southeast  of  Dietz  is  essentially 
the  same  as  at  the  Smith  mine.  Neither  the  Dietz  No.  1  nor  the 
Smith  coal  bed  was  identified  except  in  the  vicinity  of  Dietz. 
OTHER    COAL    BEDS    OF    TONGUE    RIVER    GROUP. 
Three  outcrops  of  workable  coal  beds  were  noted  on  Tongue  River, 
near  the  Wyoming-Montana  boundary  line,  that  were  not  correlated 
definitely  with  other  coal  beds.  To  judge  from  the  physical  properties 
and  the  composition  of  one  of  the  beds  they  are  probably  equivalent 
to  the  Dietz  or  Monarch  coal.  One  of  these  beds  has  been  mined  for 
domestic  use  in  the  S.  J  sec.  2,  T.  57  N.,  R.  84  W.,  by  Mr.  Evans,  who 
lives  in  the  neighborhood.     The  following  section  represents  this  bed : 
Section  of  Evans  coal  bed  on  Tongue  River,  in  sec.  2,  T.  57  N.,  R.  84  W. 
Ft.     in. 
Shale,  light  blue 16 
Coal  and  shale,  alternate  layers 2     10 
Coal 5      2 
Bony  shale,  thin  parting. 
Coal  to  level  of  river 9      2 
Base  of  coal  bed  concealed. 
Total  workable  coal  exposed 14      4 
The  calorific  value  of  this  coal  indicates  that  it  is  one  of  the  best 
coals  in  the  district. 
The  same  bed,  or  one  near  its  stratigraphic  position,  is  exposed  in 
the  bluffs  of  Tongue  River  near  the  west  side  of  sec.  6,  T.  57  N.,  R. 
83  W.,  where  it  shows  the  following  section: 
Section  of  coal  in  bluff  of  Tongue  River,  in  sec.  6,  T.  57  N.,  R.  83  " 
Ft.  in. 
Sandstone 25 
Shale 5 
Coal 3 
Sandstone 6 
Coal  down  to  level  of  Tongue  River Is 
Base  of  coal  concealed. 
Total  workable  coal  exposed ■ s 
