54  CONTRIBUTIONS   TO   ECONOMIC    GEOLOGY,   1907,  PART   II. 
Five  feet  of  coal  in  one  bench  shows  in  sec.  13,  T.  8  N.,  R.  51  E.,  and 
scattered  exposures  of  part  of  the  bed  indicate  that  it  is  valuable  as 
far  as  mapped.  A  bench  containing  3  to  4  feet  of  coal  is  exposed  at 
intervals  for  several  miles  in  the  east  side  of  T.  7  N.,  R.  51  E.,  but  the 
exposures  are  poor  and  no  complete  section  of  the  bed  can  be  given. 
WEAVER    COAL. 
At  an  elevation  of  about  100  feet  above  the  Laney  coal,  or  350  feet 
above  Yellowstone  River  at  Miles  City,  a  group  of  coal  beds  occur 
to  which  the  name  Weaver  has  been  given.  One  of  the  beds  of  this 
group  has  been  mined  at  the  base  of  Signal  Butte  by  Mr.  Weaver,  of 
Miles  City.  In  distribution  this  bed  conforms  roughly  to  the  Laney 
coal  bed,  but  as  it  is  higher  in  the  section  it  underlies  less  territory. 
In  the  northwest  corner  of  the  district,  north  of  Yellowstone  River, 
this  coal  bed  is  confined  to  the  area  south  of  South  Sunday  Creek, 
almost  all  of  it  occurring  in  T.  8  N.,  R.  45  E.  The  bed  is  usually 
divided  into  two  benches  and  is  filled  wTith  small  partings,  which  spoil 
it  for  mining.  In  the  area  south  of  the  Yellowstone  and  west  of 
Tongue  River  it  is  also  poor.     Some  sections  follow: 
Section,  including  Weaver  coal  bed,  in  south-central  part  of  Fort  Keogh  Military  Reservation. 
Ft.     in. 
Coal  and  clay  in  eq  ual  parts 6 
Clay :..  30 
Coal 6 
Clay,  carbonaceous 3      6 
Clay,  sandy 7 
Coal,  dirty 2    10 
Total  coal 9      4 
Section  of  the  Weaver  coal  bed  in  the  southwest  corner  of  T.  5  N.,  R.  47  E. 
Ft.  in. 
Coal,  dirty 2  6 
Clay,  sandy 4  6 
Coal,  dirty 2 
Total  coal 4      6 
In  Tps.  5  and  6  N.,  R.  48  E.,  this  bed  hate  a  meager  distribution,  but 
is  rendered  worthless  by  partings. 
At  the  old  Weaver  mine  near  Signal  Butte,  sec.  6,  T.  7  N.,  R.  48  E., 
the  bed  contains  4  feet  of  coal,  but  is  divided  into  several  benches,  and 
the  coal,  as  shown  by  analyses,  is  very  impure.  The  section  is  as 
follows: 
