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114  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1905. 
In  the  other  properties  belonging  to  the  Anaconda  Copper  Company  production  continues 
at  an  increasing  rate,  and  development  work  thus  far  shows  little  change  in  conditions  dur- 
ing the  past  year. 
In  the  Boston  and  Montana  properties  the  deeper  levels  have  shown  an  ore  body  main- 
taining the  full  width  encountered  above,  and  tetrahedrite  has  been  found  in  some  of  the 
ores,  with  an  accompanying  rise  in  gold  values. 
In  the  mines  owned  by  Hon.  W.  A.  Clark  development  work  has  been  extremely  fruitful, 
and  the  ore  bodies  have  proved  even  larger  and  richer  than  they  wen1  in  the  upper  levels* 
The  Stewart  shaft  has  been  dismantled  and  abandoned,  and  the  workings  of  this  mine  are 
entirely  from  the  new  shaft  formerly  known  as  the  West  Stewart,  but  now  commonly  called 
the  Stewart.  This  shaft  is  1,800  feel  deep,  and  the  ore  body  on  the  lower  level  is  said  to 
show  20  feet  of  ore,  carrying  12  per  cent  or  more  of  copper,  developed  for  a  distance  of  400 
feet  in  length. 
In  the  Original  mine  the  shaft  is  1,800  feel  deep,  and  on  the  1 , 800-foot  level  an  ore  bod; 
25  feel  wide,  said  to  average  18  per  cent  of  copper,  has  been  drifted  on  for  150  feet  and 
limit  not  yet  reached. 
For  many  years  past  this  great  copper  cam])  has  been  stirred  by  litigation  and  the  conflict 
incident  to  attempts  to  control  the  politics  of  the  county.  But  few  companies  were  forma 
and  their  success  was  doubtful.  Within  the  last  six  months,  however,  many  new  com  panics 
have  sprung  into  existence  and  the  end  is  not  yet  in  sight.  This  is  probably  largely  the  resur 
of  the  boom  in  the  price  of  copper  and  copper  stocks,  but  it  is  also  due  in  a  great  degree  t( 
tin'  phenomena]  success  of  the  North  Butte  Company  in  developing  the  largest  and  riches 
ore  bodies  found  in  recent  years.  Among  the  older  of  the  companies  formed  in  the  last  fev 
years  is  the  Pittsburg  and  Montana  Company,  which  has  at  last  reached  the  productioi 
stage,  its  output  now  being  about  300,000  pounds  of  copper  per  month  from  the  company' 
own  ores.      But  one  blast  furnace  is  run. 
The  Reins  Copper  Company,  owning  property  east  of  the  Boston  and  Montana,  ha 
opened  up  a  good  vein  of  copper  ore  on  the  800-foot  level,  has  sunk  a  shaft  to  a  depth  c 
1 ,070  feet ,  and  will  cut  a  station  at  the  1,200-foot  level  in  the  near  future.  Though  fairl 
rich  ore  has  been  encountered  in  this  property,  no  stoping  has  yet  been  done  and  some  dim 
cully  has  been  experienced  in  handling  the  flow  of  water. 
Among  the  newer  companies  organized  may  be  mentioned  the  Butte  and  London  Coppe 
Company,  which,  will  develop  the  Greendale  placer,  north  of  and  adjoining  the  Pittsbur, 
and  Montana  ground. 
The  East  Butte  Company  has  bought  up  and  is  now  mining  ore  from  a  number  of  sma 
claims  and  city  lots  in  the  southern  portion  of  the  city. 
The  Columbia-Butte  Company,  controlling  four  claims  in  the  copper-silver  belt  wet 
of  the  Lexington  mine,  is  reported  to  have  found  a  10-foot  vein  of  ore  carrying  one-half  1 
1  per  cent  of  copper  on  the  Jennie  Dell  claim,  at  a  depth  of  358  feet,  supposedly  on  tl 
Lexington  vein. 
The  owners  of  the  Raven  property,  which  has  been  extensively  developed  during  the  pa 
three  years,  have  incorporated  the  Raven  Mining  Company.     The  property  owned  by  th 
company  consists  of  the  Raven  and  Snoozer  claims,  and  is  being  developed  at  a  depth 
1,500  feet  by  a  crosscut  from  the  Buffalo  shaft  of  the  Amalgamated  Company.     The  Rave 
has  been  shipping  ore  for  some  years. 
The  J.  I.  C.  mine  is  now  being  developed  by  the  Amalgamated  Company,  as  is  also  tl 
Greenleaf  claim,  lying  east  of  the  flat,  near  the  Great  Northern  tunnel. 
The  Berlin  mine  has  recently  been  acquired  by  the  North  Butte  Company,  and  work  < 
the  400-foot  shaft  has  been  stopped,  as  the  future  development  will  be  carried  on  from  tl 
deep  levels  pf  the  company. 
The  United  Copper  Company  is  operating  the  Belmont  and  Glengary  mines,  the  B< 
mont  shaft  being  reported  to  have  a  depth  of  900  feet  and  the  Glengary  of  800  feet .  T 
Dutton  shaft  of  the  East  Butte  Company  is  to  be  sunk  from  350  to  1,000  feet  in  depth. 
