Major Mines Projects Cortez Mine
Historically, Cortez ore was processed in a 1,800 stpd CIL plant called Mill No 1, as crushed ore on heap leach pads, and refractory ore was preoxidized in a circulating fluid bed roaster The crushing and leaching circuits were built in 1969; the roasting circuit was completed in 1990 The Cortez Gold Mine includes inactive components, most of which have been closed As noted above, a few components were transferred to WPCP NEV as water management facilities When it operated, the Cortez Gold Mine utilized heap leach technology in addition to a refractory ore roaster, an original 2,000tonFACT SHEET Nevada Gold Mines LLC Cortez Gold Mine Cortez Gold Mine is a large gold mining and processing facility in Lander and Eureka County, Nevada, United States, located approximately 75 miles (120 km) Largest gold mines in the world Q1 2020 overview Kitco
Placer Dome Cortez Gold Mine Cortez Nevada Mining
In addition, the mine sold 277,000 tons of carbonaceous ore grading 73g/t for roasting and treatment at Barrick’s Goldstrike operation The sharp reduction in output during 2006 resulted from lowergrade material being milled and leached Cortez Hills The Cortez mine produced 273,000 ounces at allin sustaining cost (or AISC) of $589 per ounce in the third quarter of 2014 This is lower than the production of 333,000 ounces in 3Q13Barrick’s Cortez mine: Production down yearoveryear cyanide leaching technology and processed old mill tailings The mill burned in 1915 In 1923, the Consolidated Cortez Silver Mines Company built a new cyanide leaching mill further up Arctic Canyon and processed ore from the Arctic Mine The mill changed to oil flotation technology in 1927 and was the top producer in Nevada the following yearGold Getter News: Cortez, Hearst Invested in Early Mines
Major Mines Projects El Nino (South Arturo) Mine
The Cortez Mill could process the oxide mill grade South Arturo ore on a campaign basis The flowsheet includes crushing, semiautogenous grinding (SAG), ball milling, grind thickening, carbonincolumn (CIC) circuit for the grind thickener overflow solution, CIL circuit, tailings countercurrent decantation (CCD) wash thickener circuit, carbon stripping and reactivation circuits, and a refinery to Cortez Hills is mined via open pit and underground Both complexes have heap leach facilities Higher grade oxide ore is processed in an onsite conventional SAG mill with Barrick’s Nevada mines pay out for gold miner Canadian Carlin, Cortez, Getchell, Betze and Meikle (all in the USA), Jinya, Gaolong, Lannigou and Donbeizhai (all in China) can influence the behaviour of gold in flotation, leaching and/or recovery processes Electrum with a high silver content may give poor gold extraction due to tarnishing of the silver (Fleming, 1998) The presence of copper in theEstablishing thE ProcEss MinEralogy of gold orEs
Prestea and Bogoso Royal Gold
Ore is processed via a 15 million tonne per annum carboninleach (CIL) processing plant In May 2015, Royal Gold’s whollyowned subsidiary, RGLD Gold AG, acquired a gold stream from a whollyowned subsidiary of Golden Star Resources Ltd (Golden Star), which included production from Golden Star’s Wassa, Prestea and Bogoso minesCortez Gold Mine is a large gold mining and processing facility in Lander and Eureka County, Nevada, United States, located approximately 75 miles (120 km) southwest of ElkoIt is owned and operated by Barrick Gold and is made up of the Pipeline and South Pipeline deposits and the Cortez Hills depositCortez Gold Mine, United States Tourist Information Cortez Hills ore will be processed at the existing Cortez Pipeline mine facility Estimated capital costs are between $480500 million (100% basis), excluding capitalized interest During 2007, Barrick plans to conduct 200,000 feet of exploration drilling to follow up on 2006 high grade intercepts, advance detailed engineering and procure a Barrick Gold Corporation Barrick Updates Project
FACT SHEET Nevada Gold Mines LLC Cortez Gold Mine
The Cortez Gold Mine includes inactive components, most of which have been closed As noted above, a few components were transferred to WPCP NEV as water management facilities When it operated, the Cortez Gold Mine utilized heap leach technology in addition to a refractory ore roaster, an original 2,000ton Name: Cortez mine Location: The Cortez gold mine is located 100 km southwest of Elko, Nevada, in Lander County, US Brief history: From 1892 to 1932, Cortez silver mine Cortez mine, US Mining Weekly thrust near the south end of the Cortez Range in northcentral Nevada about 65 miles south•vest of Elko and about 55 miles south of the Carlin gold mine (Figs 1, 2) Mining started in the Cortez district in 1863 (Emmons, 1910; Lincoln, 1923) and about $14 million worth of ore has been produced 120 e IIGeology and Geochemistry of the Cortez Gold Deposit,
Cortez Nevada Mine Tour
Nevada Mine Tour Cortez Matt Gili / Ed Cope í September 17, 2014 2 Contained ounces for 2013 processed tons Contained ounces CHOP Mill 626,502 CHUG Mill 545,965 CHOP Leach 237,607 Pipeline Leach 83,299 Leach Grade Ore Cortez Heap Leach Refractory Ore Roaster / Barrick's Cortez Mine has processed 78 Mt of carbonaceous ore in a 5year period In 2003, the revenue for the carbonaceous ore sold to Barrick represented 8% of the total gold production From 1990 to 1996, Cortez treated the refractory sulfidic carbonaceous ore in a PregRobbing Gold Ores ScienceDirectthe operation has a mine life of 15 yrs 310, 000 oz gold is expected to be produced a yr (much of which will be processed through a new carboninleach mill ) this open pitable ore body along with the south pipeline ore body is part of the cortez gold mine jv: mas seq#: as of 12/31/97 reserves/resources will be included in the South Pipeline Mine Near Gold Acres, Nevada The
Measurement of surface mercury fluxes at active
Currently at the Twin Creeks mine ~ 30% of the material processed at the mill and input to the tailings originates off site, while at CortezPipeline the highgrade carbonaceousore mined is stored on site but processed at an offsite roasting facilityA high grade pad will be will be employed for ore above a cutoff grade of 00147 oz/ton (050 g/mt) following crushing to a nominal ½ inch (125 mm) particle size A second pad will operate on run of mine low grade ore projected to be minus 6 inch (150 mm) and using a Major Mines Projects Robertson Project The Cortez Gold Mine includes inactive components, most of which have been closed As noted above, a few components were transferred to WPCP NEV as water management facilities When it operated, the Cortez Gold Mine utilized heap leach technology in addition to a refractory ore roaster, an original 2,000tonFACT SHEET Nevada Gold Mines LLC Cortez Gold Mine
Cortez Hills mine work continues Local elkodaily
Carbonaceous ore is processed at Barrick’s Goldstrike Mine north of Carlin Cortez Hills is part of the Cortez Mine, which also includes the Pipeline operations, and the combined operations Cortez Hills is mined via open pit and underground Both complexes have heap leach facilities Higher grade oxide ore is processed in an onsite conventional SAG mill with CIL recovery with a design capacity of 14ktpd Refractory ore is trucked 125km to Goldstrike for processing in Barrick’s Nevada mines pay out for gold miner Barrick's Cortez Mine has processed 78 Mt of carbonaceous ore in a 5year period In 2003, the revenue for the carbonaceous ore sold to Barrick represented 8% of the total gold production From 1990 to 1996, Cortez treated the refractory sulfidic carbonaceous ore in a PregRobbing Gold Ores ScienceDirect
Measurement of surface mercury fluxes at active
Currently at the Twin Creeks mine ~ 30% of the material processed at the mill and input to the tailings originates off site, while at CortezPipeline the highgrade carbonaceousore mined is stored on site but processed at an offsite roasting facility Cortez Fourmile Goldrush Cortez Headcount 1351 Long Canyon Headcount 249 Fourmile Not included in JV Tier One asset* Potential Tier One asset *A Tier One gold asset is a mine with a stated mine life in excess of 10 years with annual production of at least five hundred thousand ounces of gold and total cash cost per ounce within the bottom MISSION: To be the world’s most valued gold mining The oxide ore will be processed at the Carlin mills or on the leach pads depending on grade Average mining rate is 90,000 tons of ore per day The old Gold Quarry deposit contains a total endowment of 24 million ounces in past production and current reserves and resourcesGold Quarry Mine Area – Western Mining History
Tales from Four Mills
Cortez Gold, Nevada USA •The author visited the mind and mill in 2002 The mine proudly described its automated mining system, in which mine data system “knew” exactly when each ore block (located by GPS) was mined •The mill described its expert control system for the SAG mills, which was said to work well exceptOre is processed via a 15 million tonne per annum carboninleach (CIL) processing plant In May 2015, Royal Gold’s whollyowned subsidiary, RGLD Gold AG, acquired a gold stream from a whollyowned subsidiary of Golden Star Resources Ltd (Golden Star), which included production from Golden Star’s Wassa, Prestea and Bogoso minesPrestea and Bogoso Royal Gold The underground mine, which originally produced at a rate of approximately 2,000 tons of ore per day, averaged 3,562 tons per day in 2007 Based on current reserves and production capacity, the expected mine life is 9 years The maximum royalties payable on the Meikle deposit are a 4% net smelter return and a 5% net profits interestThe Goldstrike Mine ~ Mining Geology