GOLD    IN    UINTA    COUNTY,   WYO.,  AND    OK     SNAKE    RIVER. 
79 
The  following- figures  furnished  by  Mr".  Hoffer  give  the  run  of  gold 
in  colors  for  the  first  1 2  feet  of  gravels  as  tested  in  two  < I  i  fferent  places : 
Colors  of  gold  in  upper  gravel  at  Pine  Bar  diggings. 
Depth  in 
feet. 
Colors  per  cubic  foot. 
A. 
B. 
1 
7,200 
6,300 
2 
23,400 
3,600 
3 
8,100 
16,200 
4 
106, 200 
11,700 
5 
8,100 
11,700 
6 
22,500 
4,500 
7 
3,600 
5,400 
8 
17,100 
900 
196,200 
60, 300 
The  tests  were  made  on  one-thirtieth  cubic  foot  of  gravel  carefully 
measured  and  the  results  per  cubic  foot  were  obtained  by  multiplying 
these  values  by  30.  About  1,000  to  1,200  colors  make  1  cent  value. 
Thus  it  will  be  observed  that  this  8  feet  of  gravel,  both  tests  being 
averaged,  prospects  from  12  to  14  cents  per  cubic  yard.  Including 
the  upper  8  feet,  the  value  for  16-foot  depth  average^  about  7  cents 
per  cubic  yard.  Working  to  a  depth  of  20  feet  or  more  should  slightly 
raise  this  value.  In  a  few  places  small  streaks  running  up  to  $2  per 
ubic  yard  have  been  cut.  Most  of  these  streaks  occur  on  top  of  the 
gold  gravels  immediately  below  the  overlying  8  feet  of  comparatively 
barren  material. 
OTHER  WORKINGS  ALONG  SNAKE  RIVER. 
Ivan  L.  HorTer,  who  is  fairly  well  acquainted  with  the  placers  of 
upper  Snake  River  from  Milner,  Idaho,  to  the  head  of  the  river,  states 
that  the  gold  is  much  the  same  in  character  throughout  the  length  of 
the  stream,  being  a  flour  gold  of  a  high  degree  of  fineness.  The 
placer  miner  usually  recognizes  two  kinds  of  this  gold — the  free  flakes 
and  the  coated.  The  different  placers,  however,  show  great  variation 
in  character  of  the  deposits  and  distribution  of  the  pay  streaks.  The 
locations  of  a  number  of  placer  workings  along  Snake  River  between 
the  Davis  diggings  and  Milner,  Idaho,  are  indicated  on  the  index  map 
in  PI.  II  by  numbers  corresponding  to  those  in  the  following  notes, 
[which  were  furnished  by  Mr.  HofTer: 
1.  Davis  diggings,  described  above. 
2.  Pine  Bar  diggings,  described  above. 
3.  McCoy  Creek.  The  bars  of  Snake  River  opposite  the  mouth  of  this  creek  have 
:>een  worked  some,  but  at  present  are  idle.  At  the  head  of  the  creek,  however,  are 
arge  hydraulic  placers  that  make  a  good  clean  up  each  year.  It  is  claimed  that  they 
lave  enough  ground  to  last  a  good  many  years  at  their  present  rate  of  working. 
4.  Market  Lake.  This  neighborhood  has  been  the  scene  of  a  number  of  small  placer 
xcitements  in  the  past,  but  it  is  not  known  whether  any  work  is  being  done  here  at 
present.     Some  dirt  running  as  high  as  $7  per  cubic  yard  has  been  taken  out  of  the 
placers  at  this  point  but  the  rich  pay  streaks  were  very  small  in  extent.     Between  the 
nouth  of  McCoy  Creek  and  Market  Lake  the  river  is  apparently  barren. 
Bull.  315—07 6 
