﻿rl22 
  NEW 
  YORK 
  STATE 
  MCSEUM 
  

  

  The 
  country 
  rock 
  in 
  the 
  vicinity 
  of 
  the 
  mines 
  is 
  almost 
  exclusively 
  

   a 
  massive 
  gray 
  or 
  pink 
  gneiss 
  which 
  is 
  included 
  within 
  the 
  crystal- 
  

   line 
  limestone 
  belt 
  of 
  this 
  region. 
  The 
  mines 
  are 
  similar 
  in 
  

   general 
  character, 
  although 
  some 
  differences 
  can 
  be 
  noticed 
  both 
  in 
  

   the 
  walls 
  and 
  the 
  products. 
  

  

  Mine 
  No. 
  3, 
  of 
  the 
  International 
  pulp 
  co. 
  This 
  mine 
  is 
  

   entered 
  by 
  a 
  shaft 
  which 
  follows 
  the 
  dip 
  of 
  the 
  country 
  rock 
  at 
  an. 
  

   angle 
  of 
  about 
  50°. 
  The 
  cross 
  section 
  of 
  the 
  shaft 
  is 
  variable, 
  but 
  

   is 
  nowhere 
  less 
  than 
  6 
  by 
  8 
  feet. 
  Timbering 
  is 
  necessary 
  only 
  at 
  

   weak 
  points 
  and 
  where 
  the 
  shaft 
  is 
  unusually 
  wide, 
  as 
  the 
  rock 
  

   is 
  massive 
  gneiss, 
  which 
  gives 
  place, 
  as 
  the 
  seam 
  is 
  approached, 
  to 
  

   massive, 
  white, 
  tremolitic 
  dolomite 
  in 
  the 
  hanging 
  wall. 
  The 
  

   bottom 
  of 
  the 
  mine 
  is 
  300 
  feet 
  below 
  the 
  surface, 
  though 
  the 
  talc 
  

   seam 
  was 
  struck 
  at 
  a 
  less 
  depth. 
  The 
  shaft 
  extends 
  to 
  this 
  depth 
  

   in 
  order 
  to 
  get 
  below 
  an 
  old 
  mine 
  which 
  had 
  caved 
  in. 
  The 
  drift 
  

   slopes 
  gently 
  upward 
  away 
  from 
  the 
  foot 
  of 
  the 
  shaft 
  to 
  give 
  

   drainage 
  and 
  to 
  facilitate 
  moving 
  the 
  loaded 
  cars 
  to 
  the 
  shaft. 
  

   The 
  hanging 
  and 
  foot 
  walls 
  are 
  nearly 
  parallel 
  and 
  dip 
  at 
  an 
  angle 
  

   of 
  50°. 
  The 
  seam 
  of 
  talc, 
  which 
  varies 
  in 
  thickness 
  from 
  15 
  to 
  25 
  

   feet, 
  and 
  is 
  of 
  unknown 
  width, 
  has 
  been 
  removed 
  for 
  a 
  distance 
  of 
  

   250 
  feet 
  along 
  the 
  strike 
  of 
  the 
  walls 
  and 
  a 
  distance 
  of 
  about 
  60 
  

   feet 
  along 
  their 
  dip. 
  

  

  At 
  the 
  breast 
  of 
  the 
  drift 
  the 
  talc 
  has 
  the 
  appearance 
  of 
  a 
  mass 
  of 
  

   ice 
  covered 
  with 
  an 
  inch 
  or 
  two 
  of 
  snow. 
  It 
  is 
  extremely 
  tough, 
  so 
  

   that 
  blasting 
  is 
  necessary. 
  

  

  The 
  talc, 
  in 
  large 
  masses, 
  is 
  thrown 
  into 
  ore 
  cars 
  which 
  run 
  on 
  

   iron 
  rails 
  from 
  the 
  breast 
  of 
  the 
  drift 
  to 
  the 
  foot 
  of 
  the 
  skip-way 
  

   leading 
  to 
  the 
  surface. 
  Here 
  it 
  is 
  dumped 
  into 
  the 
  iron 
  skip 
  -cars 
  

   which' 
  are 
  hauled 
  out 
  of 
  the 
  mine 
  and 
  on 
  to 
  a 
  trestle 
  35 
  feet 
  in 
  

   height, 
  by 
  means 
  of 
  a 
  cable 
  from 
  the 
  surface. 
  On 
  this 
  trestle 
  

   the 
  talc 
  is 
  dumped 
  into 
  another 
  hand 
  car 
  and 
  pushed 
  to 
  the 
  

   railroad 
  where 
  the 
  talc 
  is 
  loaded 
  on 
  platform 
  cars 
  which 
  convey 
  it 
  to 
  

   the 
  grinding 
  mills. 
  From 
  this 
  trestle 
  the 
  waste 
  is 
  dumped. 
  

   Plate 
  1 
  is 
  a 
  view 
  of 
  the 
  end 
  of 
  the 
  trestle, 
  and 
  also 
  shows 
  the 
  waste 
  

   dump, 
  and 
  the 
  skip-way 
  running 
  down 
  into 
  the 
  mine. 
  It 
  also 
  illus- 
  

   trates 
  the 
  position 
  of 
  the 
  mine 
  on 
  the 
  side 
  of 
  the 
  hillock. 
  

  

  Where 
  the 
  shaft 
  first 
  cut 
  the 
  talc 
  seam, 
  a 
  drift 
  was 
  started 
  in 
  the 
  

   same 
  direction 
  as 
  the 
  lower 
  one 
  now 
  in 
  use, 
  but 
  it 
  was 
  too 
  close 
  to 
  

  

  