ashley.]  CUMBERLAND    GAP    COAL    FIELD,    KY.-TENN.  269 
Ninety  feet  below  the  Neal  eoal  on  Gray  Knob,  McCreath  and  d'Invilliers 
report  a  coal  as  follows: 
Section  of  coal  90  feet  below  Neal  coal  on  Gray  Knob. 
Shale  roof.  Ft.  in. 
Coal 2  4 
"  Slate  bl'ck  clay  " 0  3 
Coal,  splinty 1  11 
Fireclay  parting _ 0  11 
Coal 0  11 
Shale 0  3 
Coal 0  3 
Shale 0  2 
Coal 2  1 
Total 9       1 
A  coal  in  the  same  position  relative  to  the  Neal  coal  on  Puckett 
Creek  gave  as  follows: 
Section  of  coal  80  feet  below  Neal  coal  on  Puckett  Creek. 
Sandstone  roof.  Ft.  In. 
Coal 3    8 
In  several  sections  coals  from  1  to  2  feet  thick  were  found  between 
75  and  100  feet  below  the  Neal  coal,  and  seemed  to  suggest  that  a  coal 
in  that  position  is  not  generally  workable." 
Creech  coal. — About  150  feet  below  the  horizon  of  the  Neal  coal  there 
is  found  in  Jackson  Mountain  a  coal  running  from  1  to  over  5  feet  in 
thickness.  Knowledge  of  this  coal  has  been  derived  entirely  from  fac- 
ings made  by  the  direction  of  Mr.  Robert  Creech  in  1902  in  Jackson 
Mountain,  and  is  a  good  illustration  of  the  possibility  of  workable 
coals  existing  in  this  district,  which  are  not  exposed  by  natural  out- 
crops. This  coal  was  accidentally  discovered  in  1901  and,  though  facings 
on  Jackson  Mountain  a  half  mile  apart  showed  it  to  run  through  that 
mountain  with  great  persistence  and  regularity,  it  has  not  been  dis- 
covered outside  of  that  limited  area.  It  is  of  course  possible  that  it  is 
thin  outside  of  the  area  of  Jackson  Mountain  and  that  it  corresponds 
in  horizon  with  one  of  the  numerous  thin  coals  found  scattered  through 
every  well-exposed  section.  Two  sections  may  be  given  from  Jackson 
Mountain. 
Section  of  Creech  coal  on  Toms  Creek. 
Sandstone  roof  12  to  15  feet  thick.  .  Ft.    In. 
Coal 4    4 
Fire  clay. 
a  Since  this  report  went  to  press  a  reconsideration  of  the  evidence  in  the  light  of  some  additional 
data  makes  it  seem  probable  that  the  13-foot  coal  on  Gray  Knob,  tin;  11-foot  coal  on  Puckett  Creek, 
and  coal  sections  of  3  to  4  feet  found  100  to  150  feet  above  the  Neal  coal  represent  a  coal  at  a  horizon 
distinct  from  that  of  the  Neal  coal  and  100  to  150  feet  above  it.  As  there  is  a  slight  doubt  as  to  the 
coal  at  the  Neal  farm  occurring  at  the  lower  horizon,  the  coal  at  the  lower  horizon  will  be  called 
the  Wallin  Creek  coal,  from  the  number  of  excellent  exposures  of  it  around  Wallin  Creek,  while 
the  upper  coal  will  be  called  the  Smith  11-foot  coal. 
