Show I THU Ill E mm J J the tho Great Ool told Producer lIcer Is A communication from the tho pen of ot W WA WA A representative of ot tile the Mining Journal treats Interestingly and Instructively of ot tilt minIs mines nt DJ Nevada of or which Simon Ham of ot this city Is general manager The company holds tho Do De group the tho April Fool 1001 and a 11 urea arel of ot contiguous territory tin th principal workings being on the tho Da De Lu Ln Lumar mar A Il sure IN tilled with a 1 partially leached gouge material In hi which t tho enriched country on both sides of oC Urn Unsure Is the main of oC ore Is If not readily detected by hy the eye eo constant assaying Is rc Ie Cutting through the tho country rock and diagonally Intersecting the tho Unsure are two porphyry dikes about fuel apart the ore me hod 1011 being oa cs strong nt the contacts of ot this porphyry with the quartzite Tho minI In Is opened by n 1 series erlos of or adits which follow Cotlow or uro to tUo tho great groat fissure From Frem the top tOJ level lovel to tho the vertical distance Is too COO feet I Itile tile the ground Is well developed The rho uro Is dropped through chutes to tho lowest which penetrates 2000 feet Is a equipped for tor electric The h ore In the Is with unimportant silver values and IB III called a n On what appears to tn tobo bo hI n parallel some feet teet east enst of ot the main fissure bodies of ot ore are been heen developed In which tho gold 18 H partially tree free Tho mill IB III treating an average of ot ton per 21 hours aile third of ot which comes from the tho Tho ore oro passes first to two No 6 Oaten cru chers and Is III holl by two No NoI I 1 antes to about size Tho rho crushed ore are Is then elevated to bins and passes from the latter by hy au automatic to 12 Chilean mills six of ot the tho Trent six of at the Janny pat pattern tern all are oro provided with slotted screens equivalent to Oro from the veins Is crushed milled separately lel und ulla Ih pulp IB passed I I I i I I I I amalgamating plates pia tOS Tn ride ores of ot which tons per Iler day uro oro handled pass direct tram from the tho Chilean to cyanide vats ats which part lIart tho sands A weak cyanide no so solution lution Is used In III the Chilean mills and ns nIl the tho pulp passes to tho Is stand standardized In the Its the pulp Is leached 12 hours In a n strong the latter then being drawn off art to tho gold goll tanks passing thence through presses and then to the zinc boxes box os Tho strong solution In the sand volA Is followed by hy a weak solution and then thell Tho panels with 10 per Iler relit cent moisture are arc finally dropped droll lied to a IL belt conveyor running under each row of ot vats delivered to a n mal main 11 conveyor which takes them to tho dump The barren solution below helow the tho Is 18 used use as a 1 weak solution In the tho Tho from the separators ors Is conveyed by n launder to n Hys HII tern tem of ot tanks where It Is leached tho gold solution Is decanted and passed to totO tio tO in the usual way The In tho main tanks s Is leached 30 hours The Tho wash wl h unter Is pumped to tho Chilean mills for tOl use therein Tho pulp that flows 1108 tram from the amalgamating plates In separately bi by b the same lame gen gon erR I method The consumption of ot u 1 cyanide In III the tho entire mill amounts to toI two pounds per ton of ot ore treated The Tho oro values average per ton The Tho tailings from the tho mill assay per par ton tOll Superintendent frank P Swindler considers that the tho metallurgical problem Is solved that the tho principal point now Is a 1 large economical handling Tho machinery at the tho mine mill millIs la Is electrically electrical driven there Hjort being 18 mo motors tors torl aggregating over flOO OO h p I The Tho power house Is In III Meadow valley wash 12 awny where two dynamos driven by b two con conI nosing engines generate current nt 2 3 0 volts The capacity is ISI 1250 h p the tho being of ot the Heine fired by b mechanical stokers At Atthe 1 the powerhouse power house la Is the pumping llant which forces water from a well wellIn wellIn In thA wash through n 1 pipeline 17 11 Miles long Ion to the mill 1111 the town of ot Do no Tho difference In elevation Is 2100 feet but there are two pump I on Oil the line I |