﻿THE 
  MINING 
  AND 
  QUARRY 
  INDUSTRY 
  I908 
  37 
  

  

  the 
  mines 
  are 
  capable. 
  An 
  important 
  addition 
  to 
  the 
  equipment 
  

   that 
  is 
  to 
  be 
  provided 
  according 
  to 
  the 
  company's 
  plans 
  is 
  a 
  noduliz- 
  

   ing 
  plant 
  for 
  the 
  treatment 
  of 
  the 
  concentrates. 
  The 
  process 
  of 
  

   nodulizing 
  iron 
  ore 
  was 
  first 
  applied 
  to 
  the 
  residues 
  obtained 
  from 
  

   burning 
  pyrites 
  in 
  the 
  manufacture 
  of 
  acids. 
  Experiments 
  with 
  

   the 
  process 
  on 
  some 
  magnetic 
  concentrates 
  have 
  shown 
  that 
  it 
  

   has 
  a 
  beneficial 
  effect 
  in 
  lowering 
  the 
  sulfur 
  content 
  and 
  agglom- 
  

   erating 
  the 
  fine 
  particles 
  into 
  lumps 
  that 
  are 
  better 
  adapted 
  for 
  

   the 
  blast 
  furnace. 
  The 
  apparatus 
  employed 
  for 
  the 
  purpose 
  con- 
  

   sists 
  of 
  a 
  long 
  rotary 
  kiln 
  usually 
  heated 
  by 
  gas, 
  into 
  which 
  the 
  

   material 
  is 
  fed 
  and 
  where 
  it 
  is 
  subjected 
  to 
  a 
  temperature 
  that 
  

   produces 
  incipient 
  fusion. 
  The 
  rotary 
  motion 
  of 
  the 
  kiln 
  prevents 
  

   the 
  formation 
  of 
  a 
  solid 
  cake 
  and 
  the 
  product 
  comes 
  out 
  in 
  the 
  

   form 
  of 
  nodules 
  or 
  lumps 
  from 
  )4 
  to 
  ^ 
  inch 
  in 
  diameter. 
  Though 
  

   magnetite 
  is 
  one 
  of 
  the 
  most 
  resistant 
  minerals 
  to 
  heat, 
  it 
  is 
  said 
  

   that 
  the 
  nodulizing 
  of 
  concentrates 
  can 
  be 
  effected 
  without 
  diffi- 
  

   culty, 
  probably 
  owing 
  to 
  the 
  small 
  quantities 
  of 
  impurities 
  present 
  

   and 
  the 
  influence 
  of 
  the 
  highly 
  heated 
  gases 
  which 
  may 
  reduce 
  

   it 
  partially 
  to 
  metallic 
  condition. 
  

  

  Salisbury 
  mine. 
  This 
  mine 
  situated 
  2 
  miles 
  north 
  of 
  Salisbury 
  

   Center, 
  Herkimer 
  co. 
  is 
  expected 
  to 
  begin 
  shipments 
  during 
  the 
  

   current 
  season. 
  It 
  has 
  been 
  under 
  development 
  for 
  some 
  time 
  by 
  

   the 
  Salisbury 
  Steel 
  & 
  Iron 
  Co. 
  The 
  mining 
  and 
  milling 
  plants 
  

   have 
  been 
  nearly 
  completed 
  and 
  the 
  railroad 
  extended 
  6 
  miles 
  north 
  

   from 
  Dolgeville 
  to 
  the 
  mill 
  site 
  at 
  Irondale. 
  The 
  mill 
  has 
  a 
  capac- 
  

   ity 
  of 
  500 
  tons 
  crude 
  ore 
  a 
  day 
  ; 
  it 
  is 
  equipped 
  with 
  Ball-Norton 
  

   drum 
  and 
  belt 
  type 
  of 
  magnetic 
  separators 
  which 
  have 
  been 
  so 
  

   successfully 
  used 
  elsewhere 
  on 
  Adirondack 
  magnetites. 
  A 
  cob- 
  

   bing 
  machine 
  is 
  designed 
  to 
  effect 
  a 
  preliminary 
  separation 
  of 
  the 
  

   lump 
  ore 
  as 
  mined 
  into 
  furnace 
  and 
  mill 
  products. 
  The 
  mill 
  stands 
  

   at 
  the 
  base 
  of 
  the 
  hill 
  below 
  the 
  main 
  shaft 
  with 
  which 
  it 
  is 
  con- 
  

   nected 
  by 
  means 
  of 
  a 
  Bleichert 
  aerial 
  tramway 
  6250 
  feet 
  long. 
  Gas 
  

   engines 
  of 
  750 
  horse 
  power 
  using 
  producer 
  gas 
  will 
  supply 
  power 
  

   for 
  the 
  mines 
  and 
  mill. 
  The 
  installation 
  and 
  developments 
  com- 
  

   pleted 
  and 
  under 
  way 
  call 
  for 
  an 
  expenditure 
  of 
  about 
  $500,000. 
  

  

  Clinton 
  hematite 
  mines. 
  There 
  was 
  a 
  cessation 
  of 
  development 
  

   work 
  on 
  the 
  Clinton 
  belt 
  last 
  year 
  and 
  only 
  two 
  mines 
  made 
  any 
  

   shipments. 
  The 
  producers 
  were 
  C. 
  A. 
  Borst 
  at 
  Clinton 
  and 
  the 
  

   Furnaceville 
  Iron 
  Ore 
  Co. 
  at 
  Ontario 
  Center. 
  A 
  resumption 
  of 
  

   activity 
  may 
  be 
  expected 
  with 
  the 
  return 
  of 
  favorable 
  trade 
  

   conditions. 
  

  

  