butts.  1  WARRIOR   COAL   BASIN,    ALABAMA.  373 
In  this  quadrangle  the  American  seam  is  known  to  the  writer  only 
in  two  diamond-drill  holes  on  Black  Branch  in  the  neighborhood  of 
Virginia  mines.  In  these  holes  the  seam,  like  all  the  thick  seams  of 
the  field,  is  much  broken  by  shale  partings,  as  the  following  sections 
will  show: 
Section  of  American  coal  scam  in  diamond-drill  hole  on  Black  Branch. 
Shale :  Inches. 
Coal  2 
Slate   5 
Coal  2 
Slate   3 
Coal 31 
Slate 9 
Coal  2 
Slate   4 
Coal    3 
Total  . 61 
Section  of  American  coal  seam  in  diamond-drill  hole  at  Virginia  mines. 
Shale :  Inches. 
Coal 4 
Slate   5 
Coal 3 
Slate    4 
Coal  : 20 
Slate    7 
Coal  2 
Slate   2 
Coal    G 
Total   57 
MARY   LEE    GROUP. 
The  Mary  Lee  seam  was  noted  at  Johns  and  along  the  railroad 
between  that  place  and  Adger.  It  appeared  to  be  thin  and  of  no 
value.  Mr.  McCalley,a  however,  gives  a  number  of  measurements  of 
what  he  regarded  as  this  seam  in  both  the  Little  and  Big  basins,  a 
few  of  which  are  given  below.  These  measurements  show  that  the 
seam,  though  of  considerable  thickness  in  places,  is  generally  much 
broken  by  shale  partings,  so  as  to  be  of  little  importance  from  a 
practical  standpoint. 
a  Kept,  on  Warrior  basin,  p.  97. 
