50  CONTRIBUTIONS    TO   ECONOMIC    GEOLOGY,   1907,   PART   II. 
Section  of  Kircher  coal  bed  on  Sunday  <  'reek,  mar  north  line  of  T.  8  N.,  R.  4$  E. 
Ft.      in. 
Coal,  bony 1 
Clay,  blue H 
Coal,  bony - 2£ 
( 'lay  ....  * \ 
(\»al 2 
Sand \ 
Coal 2     2 
Shale,  gray 1 
Coal 1     9 
Total  coal 4    4£ 
Between  Tongue  and  Powder  rivers  this  bed  is  not  exposed,  and 
though  it  is  no  doubt  workable  in  some  places  the  areas  in  which  it  is 
of  economic  value  can  not  be  located  without  drilling.  In  the  greater 
part  of  this  district  its  depth  is  less  than  600  feet,  and  it  is  nowhere 
more  than  900  feet  below  the  surface.  It  outcrops  in  workable 
thickness  in  the  left  bank  of  Powder  River  in  sec.  2,  T.  7  N.,  R.  51  E., 
where  it  is  mined  to  supply  fuel  for  a  small  irrigation  plant.  The 
section  of  the  bed  is  as  follows: 
Section  of  Kircher  coal  bed  in  sec.  2,  T.  7  N.,  R.  51  E. 
Ft.     in. 
Coal . . . .     1  11 
Bone  parting \ 
Coal 1  10 
Total  coal 3    9 
The  bed  is  exposed  at  intervals  along  the  river  bank  for  about  2 
miles  to  the  south,  where  it  is  probably  workable  but  somewhat 
thinner  than  at  the  mine.  North  of  the  mine  it  is  concealed  for  a 
considerable  distance,  but  an  exposure  in  sec.  23  in  the  same  town- 
ship shows  less  than  1  foot  of  coal.  A  bed  which  is  of  workable 
thickness  locally  has  produced  some  coal  from  a  short  drift  on  Brown's 
ranch,  in  sec.  36,  T.  7  N.,  R.  51  E.,  and  has  been  traced  for  several 
miles  along  the  bluffs.  This  bed  is  10  to  20  feet  above  Powder  River, 
and  should  possibly  be  correlated  with  the  B  coal  bed,  which  lies 
about  60  feet  above  the  Kircher  bed.  It  contains  over  3  feet  of  coal 
at  Brown's  ranch,  as  shown  by  the  following  section: 
Section  of  coal  bed  on  Brown's  ranch,  sec.  36,  T.  7  N.,  R.  51  E. 
Ft.      in. 
Coal 2     10 
Shale 1 
(  oal 8 
Total  coal 3      G 
At  the  mouth  of  Horse  Creek,  1^  miles  north  of  Brown's  ranch,  the 
bed  is  divided  and  of  no  value.     It  is  of  sufficient  thickness  for 
