﻿•20 
  ECONOMICAL 
  GEOLOGY. 
  

  

  Ft. 
  In 
  

  

  No. 
  32. 
  Black 
  shale 
  ll 
  

  

  N,,.::;. 
  C.alNo. 
  6 
  ' 
  ' 
  

  

  No. 
  34. 
  Olay 
  shale 
  15 
  

  

  No. 
  35. 
  Black 
  Bhale 
  3 
  

  

  No. 
  36. 
  Coal 
  (local) 
  ' 
  '" 
  

  

  No. 
  37. 
  Fire-clay 
  '-' 
  

  

  No. 
  38. 
  Gray 
  shale 
  M 
  

  

  No. 
  :!'». 
  Hard 
  black 
  rock 
  (limestone) 
  ! 
  

  

  No. 
  10. 
  Black 
  slate 
  

  

  No. 
  41. 
  CoalNo.5 
  5 
  6 
  

  

  Total 
  depth 
  w 
  6 
  

  

  All 
  the 
  coal 
  seams 
  from 
  5 
  to 
  9 
  are 
  clearly 
  represented 
  in 
  this 
  

   shaft, 
  and 
  are 
  readily 
  identified. 
  It 
  is 
  to 
  be 
  regretted 
  that 
  such 
  

   records 
  are 
  not 
  kept 
  of 
  every 
  shaft 
  sunk 
  in 
  the 
  State, 
  for 
  they 
  

   would 
  be 
  of 
  permanent 
  value 
  to 
  the 
  proprietors 
  and 
  operators 
  alike. 
  

   in 
  settling 
  many 
  questions 
  that 
  necessarily 
  arise 
  in 
  coal 
  mining 
  

   operations, 
  and 
  would 
  prove 
  a 
  source 
  of 
  scientific 
  as 
  well 
  as 
  eco- 
  

   nomic 
  information 
  to 
  all 
  who 
  desire 
  to 
  become 
  acquainted 
  with 
  

   the 
  fuel 
  resources 
  of 
  the 
  State. 
  In 
  visiting 
  the 
  various 
  shafts 
  that 
  

   have 
  been 
  sunk 
  within 
  the 
  past 
  three 
  or 
  four 
  years. 
  1 
  have 
  found 
  

   that 
  not 
  more 
  than 
  one-third 
  of 
  the 
  whole 
  number 
  have 
  preserved 
  

   any 
  record 
  whatever 
  of 
  the 
  different 
  beds 
  passed 
  through. 
  

  

  Two 
  very 
  important 
  experiments 
  have 
  been 
  made 
  during 
  the 
  past 
  

   two 
  years, 
  to 
  determine 
  whether 
  the 
  main 
  coal 
  seams 
  could 
  be 
  

   found 
  available 
  over 
  the 
  central 
  portion 
  of 
  the 
  Illinois 
  eoal 
  field, 
  

   and 
  both 
  have 
  proved 
  successful. 
  The 
  first 
  one 
  undertaken 
  was 
  the 
  

   shaft 
  at 
  Mattoon, 
  which 
  is 
  probably 
  the 
  deepest 
  one 
  west 
  of 
  Pitts- 
  

   burg. 
  In 
  this, 
  coal 
  No. 
  2 
  of 
  the 
  general 
  section 
  was 
  found 
  at 
  the 
  

   depth 
  of 
  about 
  900 
  feet. 
  No. 
  5 
  was 
  passed 
  at 
  a 
  depth 
  of 
  nearly 
  

   700 
  feet, 
  but 
  was 
  found 
  to 
  be 
  too 
  thin 
  to 
  be 
  of 
  any 
  practical 
  value. 
  

   Pot 
  the 
  following 
  details 
  of 
  the 
  Mattoon 
  shaft 
  I 
  am 
  indebted 
  to 
  

   Thro, 
  .lonte. 
  Esq., 
  and 
  Mr. 
  Stoddard: 
  

  

  MATTOHN 
  Ml 
  Ml. 
  

  

  N,, 
  1 
  Surface 
  BOU 
  

  

  No. 
  ■_• 
  fellow 
  olay 
  

  

  \,, 
  :i 
  Blue 
  sand 
  ' 
  

  

  : 
  Bard-pan 
  JJ 
  

  

  v 
  5 
  Band 
  and 
  gravel 
  

  

  • 
  Bit 
  laj 
  and 
  gravel 
  

  

  <ii.-. 
  -n 
  olay 
  -hale 
  

  

  v. 
  e 
  Limestone 
  

  

  

  

  No 
  i" 
  Limestone 
  

   v. 
  ii 
  Qoal 
  No 
  i 
  • 
  

  

  Ft. 
  In. 
  

   S 
  

  

  