298  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,   1903.  [bull.  225. 
No.  3. 
Shale  roof.  Ft.  In. 
Coal 3  0 
Shale - 0  5 
Coal 0  5 
Fire-clay  floor. 
Total 3     10 
No.  4. 
Shale  roof. 
Coal 2      8 
Binder 0      1J 
Coal 0     10 
Coal,  bony 0      8 
Fire-clay  floor. 
Total 4      3£ 
Few  clay  veins  have  been  encountered  in  this  bed,  which  generally 
seems  to  be  free  from  the  irregularities  that  affect  the  lower  coals. 
Quality  of  the  coal. — In  order  to  determine  the  quality  of  the  coal,  a 
sample  was  obtained  from  one  of  the  mines  near  Barnesboro  by  mak- 
ing a  cut  entirely  across  the  bed  of  coal  at  one  of  the  working  faces, 
exclusive  of  the  partings.  According  to  Dr.  Eugene  C.  Sullivan,  of 
the  United  States  Geological  Survey,  the  composition  of  the  coal  is  as 
follows: 
Analysis  of  Upper'  Freeport  coal  from  near  Barnesboro,  Pa. 
Per  cent. 
Moisture 0.  70 
Volatile  hydrocarbons 25.  06 
Fixed  carbon 61.  72 
Ash 12.  52 
Sulphur 2.  84 
Coke Much  swollen,  very  porous. 
The  noticeable  feature  of  the  above  analysis  is  that  the  percentage 
of  ash  is  unusually  high  for  coals  of  this  field.  Since  the  coal  is 
reported  as  giving  excellent  results  under  the  boiler,  it  seems  pos- 
sible that  the  sample  analyzed  contains  a  larger  amount  of  earthy 
matter  than  is  generally  present  in  this  coal. 
MINES. 
The  mines  actively  working  Upper  Freeport  coal  are:  Lancashire 
Nos.  9  and  10,  operated  by  Barnes  &  Tucker;  Allport  mine  of  the 
Allport  Coal  Company;  Walnut  Run  Coal  Company's  mine  No.  1; 
Manion  mine  of  the  Maderia  Hill  Coal  Mining  Company,  and  Cymbria 
mine  of  Cymbria  Coal  Company.  The  Rich  Hill  Coal  Company  is 
also  preparing  to  open  up  this  coal  at  Hastings. 
Lancashire  mines  JVos.  9  and  10.—  These  are  the  only  mines  on  this 
bed  having  independent  equipment.     They  lie  on  opposite  sides  of 
