Rosemont Copper Update APRIL, 2014 TSX/NYSE MKT:AZC About Rosemont Rosemont Copper Company (Rosemont) is an Arizona Corporation. Rosemont is a subsidiary of Augusta Resource Corporation. Augusta is a publicly traded company on the New York and Toronto stock exchanges under the symbol AZC. Rosemont is led by a management team with over 570+ years of collective mining experience throughout the world. The Rosemont office and team is located in Tucson, Arizona. TSX/NYSE MKT:AZC 2 Project Philosophy Designs were based on “best available” technology Greatly reducing water usage and land requirements by using Filtered Tailings Technology Reducing air emissions by using Tier II and Tier IV mining equipment with the highest emission standards. Controlling dust emissions with high efficiency dust collectors. Reducing visual impacts through concurrent reclamation and re-vegetation practices on all exterior slopes of the landform. Utilizing cattle during reclamation to aid the land rehabilitation. LED outdoor lighting reducing light pollution and sky glow. TSX/NYSE MKT:AZC 3 Rosemont Team with 570+ Year Cumulative Experience in Mining TSX/NYSE MKT:AZC 4 Industry Technology Trends and Copper Grade, Price and Production GLOBAL REFINED COPPER MARKET BALANCE Possible Projects 27,000 GLOBAL REFINED COPPER CONSUMPTION 5.2% p.a. (annual average 2010-2016) Thousand Tonnes Copper 25,000 Probable Projects Highly Probable Projects 23,000 Projects under Construction GLOBAL COPPER CONSUMPTION EXCLUDING CHINA 21,000 Restarts Secondary Refined Cu (Scrap) 19,000 17,000 Secondary Cu (Scrap) Base Mine Supply 15,000 Base Mine Total World Cu Demand excluding China 13,000 Total World Cu Demand TSX/NYSE MKT:AZC 2016 2015 Global Cu Production 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 11,000 5 Arizona Major Mines TSX/NYSE MKT:AZC 6 Copper Production Comparison Copper Production - U.S. vs. Arizona (1900-2012) US Mine Production Arizona Mine Production 2,200,000 2,000,000 Copper Production (Short Tons) 1,800,000 1,600,000 1,400,000 1,200,000 1,000,000 800,000 600,000 400,000 200,000 2011 2008 2005 2002 1999 1996 1993 1990 1987 1984 1981 1978 1975 1972 1969 1966 1963 1960 1957 1954 1951 1948 1945 1942 1939 1936 1933 1930 1927 1924 1921 1918 1915 1912 1909 1906 1903 1900 - Year TSX/NYSE MKT:AZC 7 History and Ownership Helvetia and Rosemont Mining District Congress recognizes Helvetia and Rosemont Mining Districts - 1880 Southern Arizona led the nation’s copper production - 1900 Rosemont District mined - 1870 through 1950 First mining claims: • Narragansett, 1879 • Eclipse, 1884 • Backbone, 1885 Recent History: • • • • Banner Mining Company, 1961 Anamax, 1973 - 1986 Asarco, 1988 - 2004 Rosemont Copper, 2005 TSX/NYSE MKT:AZC Old Rosemont, ca. 1900 Store and warehouse, center; Rosemont Hotel, right. 8 Rosemont production 2013A U.S. Copper Production By Mine (Mlbs) 664 When in production, Rosemont will be the third largest U.S. copper mine 235 LOM avg Mo production/yr (lbs) 5.4M LOM avg Cu recovery 87% LOM avg Mo recovery 58% Waste to ore ratio 1.9:1 Mine life 21+ years 216 171 146 134 108 Miami Robinson *Mission Safford Sierrita Bagdad *Ray Complex Rosemont Bingham Canyon Morenci 61 46 38 Mineral Park 243 243M *Silver Bell 256 LOM avg Cu production/yr (lbs) * Mines owned by Asarco/Grupo Mexico based on 2012A production metrics as by mine statistics have not yet been published. SOURCE: Public filings NOTE: All metrics relating to Rosemont are presented on a 100% basis TSX/NYSE MKT:AZC 9 PERMITTING UPDATE TSX/NYSE MKT:AZC 5/1/2014 1010 Permitting Timeline File Plan of Operations; first step in NEPA permitting process (July 2007) 2007 Certificate of Environmental Compatibility (December 2011) Reclamation Plan Approval/Permit (July 2009) 2008 2009 Groundwater Withdrawal Permit (January 2008) Stormwater Permit (April 2008) Expect to receive Final Record of Decision (Q2 2014) Aquifer Protection Permit (April 2012) 2010 2011 2012 Expect to receive Clean Water Act 404 Permit (Q2 2014) 2013 2014 Air Quality Permit; (January 2013) Final Environmental Impact Statement (November 2013) Publication of Rosemont Draft Record of Decision (December 2013) TSX/NYSE MKT:AZC 11 Permitting Schedule F E I S Nov/13 4 0 4 D R O D + 90-120 day comment and resolution period 45 day comment period 45 day resolution period Dec/13 1x-30 day extension WE ARE HERE F R O D Q2/14 Break Ground On Federal Land H2 - 2014 US Forest Service NEPA Process Army Corps of Engineers Process NOTE: DROD = Draft Record of Decision; FROD = Final Record of Decision; 404 = Clean Water Act 404 Permit TSX/NYSE MKT:AZC 12 Rosemont Project Timeline CONSTRUCTION - IMMINENT PERMITS: Q2 2014 7 of 8 major permits received FEIS published Nov 2013 Draft ROD issued Dec 2013 CWA 404 Permit expected Q2/14 Final ROD expected Q2/14 TSX/NYSE MKT:AZC Preproduction, mining and construction 22 months CONSTRUCTION - IMMINENT Start construction by end of 2013 Preproduction,environmental mining and construction 22 Engineering, work, months CONSTRUCTION: H2-2014 preproduction, mining and construction 32 months PRODUCTION: Q1 2017 21+ year mine life based on proven & probable reserves 13 Project Opposition Issues Water Where will the water come from and how much Will the mine pollute the drinking water Dust from the project Truck traffic on the road Use of federal land to place material from the mine Project will hurt tourism Effects to wildlife TSX/NYSE MKT:AZC 14 Mitigation Program Recharge of CAP water to replace water used – have banked 45,000 acre feet to date. Agree to build a $20 million pipeline for CWC to bring CAP water near Green Valley Using filtered tailings to reduce water usage Recycling process water Use of new lighting LED Extensive monitoring and reporting program Replacement of roads and recreational trail facilities Establishment of features to support endangered and other species 4,500 acres of private property and 1,700 ac-ft of water right in conservation packages. Long term endowment of $25 million Annual community support of $500K once production begins TSX/NYSE MKT:AZC 15 COMMUNITY UPDATE TSX/NYSE MKT:AZC 5/1/2014 1616 Rosemont Community Philosophy Community Initiate community relations efforts early Provide community support Two-way communication with the community Establish local, county and business support TSX/NYSE MKT:AZC 17 Working Toward Higher Education University of Arizona Total commitment of $1.4 million through from 2008-2014 Pima College UA programs included are: Dept. of Natural Resources UA School of Mining & Engineering UA Women in Science & Engineering University Foundation Social & Behavioral Sciences College Arizona Assurance Program UA Medical Foundation UA Athletics TSX/NYSE MKT:AZC Launched programs focused on science and engineering with an emphasis on mining 18 scholarships totaling $32,000 Local students who will be first in family to attend college Pima College to administer scholarship program 18 Broad Public Interest Associations, Businesses, Cities, Chambers and Individuals have registered their support of the Rosemont Project: ACT - Alliance of Construction Trades Benson City Council ABA - Arizona Builders‘ Alliance Benson/San Pedro Chamber of Commerce ACA - Arizona Contractors Association City of Marana AMIGOS - Arizona Mining Industry Gets Our Support Greater Vail Area Chamber of Commerce SACA Marana Chamber of Commerce SAHBA - Southern Arizona Home Builders Association Metropolitan Pima Alliance SAEDG - Southern Arizona Economic Development Group Nogales Santa Cruz County Chamber of Commerce SEAGO - South Eastern Arizona Governments Organization Northern Pima County Chamber of Commerce SVEDF - Sierra Vista Economic Development Foundation Sierra Vista Area Chamber of Commerce TUCA - Tucson Utility Contractors Association Thatcher City Council PALF - Pima Area Labor Federation Tucson Hispanic Chamber of Commerce USW - United Steelworkers of America Tucson Metropolitan Chamber of Commerce 12,000 Families signed to support Willcox Chamber of Commerce & Agriculture 120 Southern Arizona business leaders - Southern Arizona Contractors Association TSX/NYSE MKT:AZC 19 PROJECT ECONIMICS TSX/NYSE MKT:AZC 5/1/2014 2020 Rosemont Production Economics Major Economic Engine • Creates almost 4,200 jobs annually in the USA • 2,100 Southern Arizona • 800 additional in the State • 1,300 addition in the Nation • Provides $1.2+ billion in new investment • Contributes $3 billion of Federal income tax • Total Economic Impact of nearly $30 billion to the USA over the life of mine TSX/NYSE MKT:AZC 21 Rosemont CAPEX CAPEX Breakdown ($M) General Site / Ancillary Facilities $60 Mine $252 Concentrator & Tailings $471 Power / Water Supply $122 EPCM/Commissioning/ Spare Parts $104 Owner’s Costs $163 Contingency $51 Sunk Costs (Equipment & EPCM) Contingency General Site/ Ancillary Facilities Owner’s Costs EPCM/ Commissioning/ Spare Parts Mine Power/Water Supply ($113) Concentrator & Tailings Total Construction & Commissioning Mine Pre-development CAPEX Total CAPEX TSX/NYSE MKT:AZC $1,110 $116 $1,226 22 ROSEMONT FINANCING PLAN Going forward CAPEX of $1.226 billion(1) Source of funds Project Financing LGI/ KORES ($106M) Silver Wheaton ($230M) Project Financing ($890M)(2) Expected to be Completed in Second Half-2014 Mandate Letter Signed Syndicate of 12 banks (1) From Rosemont 2012 Feasibility Study. Update including mine pre-development costs of $116M less equity already invested of $113M (2) Excluding additional financing costs such as interest during construction, upfront fees, cost overrun facility, etc. TSX/NYSE MKT:AZC 23 PROJECT DESIGN TSX/NYSE MKT:AZC 5/1/2014 2424 Drilling Summary – Rosemont Deposit Company Time Period Drill Holes Number Feet Banner 1950s-1963 3 4,300 Anaconda 1963-1973 113 136,838 Anamax 1973-1986 52 54,350 ASARCO 1988-2004 11 14,695 Augusta 2005-2012 87 132,525 266 342,708 Total All holes drilled at the Rosemont Property have been conducted along lines that are approximately 200 feet apart. Currently the average spacing for holes along these lines is 250 feet. TSX/NYSE MKT:AZC 25 Cross Section with Phases TSX/NYSE MKT:AZC 26 Barrel Only Final TSX/NYSE MKT:AZC 27 Rosemont is Construction Ready $90M already spent on equipment Most major equipment procured – fixed price contracts set in 2008/2009 Grinding mills and drives paid for and delivered TSX/NYSE MKT:AZC 28 TSX/NYSE MKT:AZC REGRIND MILL COLUMN CELLS CLEANERS-SCAVENGERS COPPER MOLYBDENUM ROUGHER BANKS 1 & 2 PRIMARY CRUSHER COSP Cu/Mo THICKENER TAILINGS THICKENERS BALL MILLS 1&2 MOLYBDENUM FLOTATION SAG MILL COPPER CONCENTRATE THICKENER COLUMN CELLS TAILINGS FILTERS ROSEMONT COPPER - 75,000 STPD FLOWSHEET MOLYBDENUM PACKAGING COPPER CONCENTRATE TAILINGS STORAGE FACILITY PEBBLE CRUSHER Sulfide Flow Sheet 29 Primary Crusher TSX/NYSE MKT:AZC 30 Grinding Building TSX/NYSE MKT:AZC 31 Flotation Building TSX/NYSE MKT:AZC 32 Tailings Filter Building TSX/NYSE MKT:AZC 33 Shiftable Conveyor with Spreader TSX/NYSE MKT:AZC 34 PROJECT MANAGEMENT TSX/NYSE MKT:AZC 5/1/2014 3535 Project Management Structure “Owner Controlled EPCM” ROSEMONT PROJECT TEAM Mine Fleet Procurement Pre-stripping Engineering Procurement Construction Mgmt. Commissioning Start-up Cost/Schedule Project Control M3 ENGINEERING Field Engineering RFI’s CDM SMITH Integrated Project Delivery in which Rosemont maintains control of cost and schedule. EP and CM contractors act as agents for Rosemont. Leverages skill sets to maximize project performance and accountability. TSX/NYSE MKT:AZC 36 Bid Evaluation Key Evaluation • Bid must conform to bid package structure as requested in the RFQ • Safety Record • Proposed Team • Content of the work plan • Current Work Load • Prior experience in the work requested • Price • Local presence TSX/NYSE MKT:AZC 37 Questions? TSX/NYSE MKT:AZC
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