CORPORATEPRESENTATIONOCTOBER2016

TSX-V:ATY|OTC:ATCMF|ATICOMINING.COM 1

TSX-V:ATY|OTC:ATCMF|ATICOMINING.COM

CAUT IONARY NOTES AND QP

Certain statements in this presenta-on cons-tute forward-looking statements and as such are based on anassumed setofeconomic condi-onsandcoursesof ac-on.These includees-matesof futureproduc-on levels,expecta-ons regardingmine produc-on costs, expected trends in mineral prices and statements that describeA-coMiningCorpora-on’sfutureplans,objec-vesorgoals.Thereisasignificantriskthatactualresultswillvary,perhapsmaterially, fromresultsprojecteddependingonsuchfactorsaschanges ingeneraleconomiccondi-onsand financial markets, changes in prices for silver and other metals, technological and opera-onal hazards inA-co’sminingandminedevelopmentac-vi-es,risksinherentinmineralexplora-on,uncertain-esinherentinthees-ma-onofmineral reserves,mineral resources,andmetal recoveries, the-mingandavailabilityoffinancing,governmentalandotherapprovals,poli-calunrestorinstabilityincountrieswhereA-coisac-ve,labourrela-onsandotherriskfactors.TheCompanyhasnotbaseditsproduc-ondecisionsandongoingmineproduc-ononmineralreservees-mates,preliminaryeconomicassessmentsorfeasibilitystudies,andhistoricallysuchprojectshaveincreaseduncertaintyandriskoffailure.Mineralresourcesthatarenotmineralreservesdonothavedemonstratedeconomicviability.Dr.DemetriusPohl,PhD,istheQualifiedPersonforA-co,asdefinedbyNa-onalInstrument43-101.Dr.Pohlwasalso responsible forensuring that the informa-oncontained in thispresenta-on isanaccurate summaryof theoriginalreportsprovidedtoA-coandhasapprovedthescien-ficandtechnicalcontentofthispresenta-on.

NON-GAAPFINANCIALMEASURESCashcostperpoundofpayablecopperproducedandcashcostpertonneofprocessedorearekeyperformancemeasuresthatmanagementusestomonitorperformance.Inaddi-on,cashcostsareanindustrystandardmethodofcomparingcertaincostsonaperunitbasis;however,thesedonothaveastandardizedmeaningandmaydifferfrommethodsusedbyothercompanieswithsimilardescrip-ons.Managementbelievesthatcertaininvestorsusethesenon-GAAPfinancialmeasurestoevaluatetheCompany’sperformance.Theseperformancemeasureshavenomeaningunder IFRSand,therefore,amountspresentedmaynotbecomparabletosimilardatapresentedbyotherminingcompanies.

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AT ICO MIN ING CORPORAT ION Companysnapshot

MANAGEMENT&DIRECTORS

STRATEGY

ELROBLEMINE,COLOMBIA

SHARESTRUCTURE

CASHBALANCE*

*AsofJuly31st,2016

§  ~18%foundinggroup§  ~49%ins-tu-onalshareholders§  ~33%retailshareholders

§  Successfultrackrecordcrea-ngshareholdervalue

§  Industryexper-seandextensiveregionalnetworkinLa-nAmerica

§  Buildaleadingmid--erCu-Auproducerthroughorganicgrowthandacquisi-ons,focusedonhighmarginopera-onsinLa-nAmerica

§  90%Ownershipofproducingmineandsurroundingclaims§  ElRoblehasminedhighgradeCu-Aumaterialforover22years§  M&Iresourceof1.87Mtat3.46%Copper,2.27g/tGold§  6,679hectarecon-guousunderexploredlandpackagewith10kilometerfavorablegeologicalcontactzoneprospec-veforVMSmineraliza-on

§  US$4.7million

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2015 2016

CAP ITAL STRUCTURE Tightsharestructure

TSX.V ATYOTC ATCMFSharesoutstanding 97.6millionOp-onsoutstanding 7.9millionFullydiluted 105.5million

TopinsWtuWonalshareholdersü  Ingalls&Snyderü  Frontdealü  ResourceCapitalFundsü  Gold2000

InsWtuWonalcoverageü  PIFinancialü  M-Partnersü  DundeeSecuri-es

InsWtuWonalwatchlistü  Canaccord

ATY.Vsharepriceperformance

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FernandoE.Ganoza,B.Sc.Engineering,MBAChiefExecuWveOfficerFernandoisaMiningEngineerwithover15yearsofmanagementexperienceinLa-nAmericaincludingkeyrolesinthedevelopmentofminesinPeruandMexicoasProjectManagerandCountryManagerforCanadianbasedproducerFortunaSilverMines.

JorgeR.Ganoza,B.Sc.EngineeringPresidentandDirectorJorgehasover40yearsexperienceinLa-nAmericanminingindustryholdingseniorleadingrolesinthefoundinganddevelopmentofprivateandpublicminingcompanies.

JosephA.Salas,B.Sc.GeologicalEngineeringSr.ExploraWonManagerJosephhasover20yearsexperienceinexplora-on,minegeology,projectevalua-onanddevelopmentwithvastexper-seingold-copperandcopper-molybdenumporphyriesinColombiaandPeru.

BillTsang,CPA,CAChiefFinancialOfficerBillisaCharteredProfessionalAccountantwithmorethan10yearsoffinancialaccoun-ngandaudi-ngexperienceinthemineralexplora-onandminingindustry.

MANAGEMENT SuccessfultrackrecordinLaWnAmerica

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D IRECTORS SuccessfultrackrecordinLaWnAmerica

JorgeA.Ganoza,GeologicalEngineerChairmanoftheBoardJorgeisaco-founderofFortunaSilverMinesInc.wherehecurrentlyholdstheposi-onofPresident,CEOandDirector.

JorgeR.Ganoza,B.Sc.EngineeringPresidentandDirectorJorgehasover40yearsexperienceinLa-nAmericanminingindustryholdingseniorleadingrolesinthefoundinganddevelopmentofprivateandpublicminingcompanies.PreviouslytojoiningA-co,Mr.Ganozaheldtheposi-onofVPofOpera-onsinFortunaSilverMinesInc.

LuisD.Ganoza,B.Sc.Engineering,MBA,M.Sc.DirectorLuisholdstheposi-onofChiefFinancialOfficerinFortunaSilverMinesInc.andhasover12yearsexperienceinthefinancialmanagementofpublicminingcompanies.

MarioSzotlenderDirectorMario,co-founderofFortunaSilverMines,isalsoaDirectorofRadiusGoldInc.andEndeavourSilverCorp.

MichaelWinnDirectorMichaelhasover20yearsexperienceintheresourcesector,andisthePresidentofSeabordCapitalCorp.whichprovidesinvestmentanalysisandfinancialservicestocompaniesopera-ngintheenergyandminingsectors.LuisF.SáenzDirectorMr.Sáenzisafinanceexecu-vewithover20yearsexperienceinminingfinanceandmetalstradingwithafocusonLa-nAmerica.

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GROWTHSTRATEGY Focusedonmedium-sizedhighgradeCu-AuassetsinLaWnAmerica

§  Evaluatemedium-sizedadvancedexplora4onopportuni4esinColombia(VMSandcentralCu-Autrend),Peru(southerncopperbelt)andChile(northerncopperbelt)

§  Acquiremid-sizeprivateorpublicsmallscaleproducingmineswithexplora-onpoten-al

§  Focusonsustainableorganicgrowthatcurrentopera-on

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E L ROBLE MINE , COLOMBIA

§  ElRoblemineistheonlyCu-AuVMSdepositinproduc-oninColombia

§  3.5hoursawayfromthecityofMedellinviapaved145kilometerhighway

§  Powergrid,abundantwaterandminefacili-esonsite

ExcellentlocaWonandmineinfrastructure

ElRobleMine

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E L ROBLE MINE , COLOMBIA InproducWonforover22years

LocaWon CarmendeAtrato,Colombia

Ownership 90%

Typeofdeposit Mafic-typeVolcanicMassiveSulphide

CommodiWes Cu,Au,Ag

Processing Standardgrinding,millingandflota-oncircuit

OperaWon 800tpdundergroundmine

EndProduct Cu(+Au,Ag)Concentrate

M&IResource 1.87Mtat3.46%Copper,2.27g/tGold

800tpdprocessingfacility

*

*1,412

9,07912,044

543%

33%

0

2,000

4,000

6,000

8,000

10,000

12,000

14,000

16,000

2013 2014 2015 2016E

(000s)lbs

CopperProducWon

2,297

9,53810,994315%

15%

0

2,000

4,000

6,000

8,000

10,000

12,000

2013 2014 2015 2016E

oz

GoldProducWon

* Duringtheop:ontermanduptoNovember22nd2013,theCompanywasnotresponsibleforminingorforresourcedevelopmentandgainednoincomefromtheminingopera:ons

**TheCompanyisbasing2016guidanceonyearendedDecember31,2015financialandproduc:on

results.PleaserefertoCau:onaryNoteonForwardLookingStatementsatthebeginningofthisdocument.

**

**

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E L ROBLE MINE , COLOMBIA ProducWonSummary 2013* 2014 Q22015 Q32015 Q42015 2015 Q12016 Q22016

ProducWonCopper(000slbs) 1,412 9,079 2,909 3,255 3,876 12,044 4,277 4,786

Gold(ounces) 2,297 9,538 2,298 2,969 3,436 10,994 2,566 2,948

MineTonnesmined 69,901 139,154 41,287 48,319 57,725 179,995 53,752 63,112

MillTonnesprocessed 69,895 133,332 40,747 48,015 55,775 178,095 53,715 64,246

Tonnesprocessedperday 303 462 576 641 729 638 778 814

Coppergrade(%) 1.07 3.37 3.45 3.26 3.34 3.26 3.81 3.63

Goldgrade(g/t) 1.56 3.3 2.65 2.81 2.63 2.78 2.25 2.20

RecoveriesCopper(%) 89.6 91.4 93.7 94.4 94.4 94.1 94.4 93.0

Gold(%) 65.2 66.9 66.1 68.5 72.7 69.2 67.2 65.0

ConcentrateCopperandGoldconcentrates(dmt) 3,294 19,418 6,938 7,830 9,417 29,024 9,674 10,718

Payablecopperproduced(000slbs) 1,341 8,625 2,764 3,092 3,682 11,428 4,048 4,547

CashCostperpoundofpayablecopperproduced(1) N/A 0.82 1.16 0.98 0.81 1.00 0.86 0.96

*Duringtheop:ontermanduptoNovember22nd2013,theCompanywasnotresponsibleforminingorforresourcedevelopmentandgainednoincomefromtheminingopera:onsNote:Metalproduc:onfiguresaresubjecttoadjustmentsbasedonfinalsePlement(1)  Netofby-productcredits(refertonon-GAAPFinancialMeasures)

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E L ROBLE MINE , COLOMBIA Majorscale-upcomponentscompletedtoachieve800tpd

NewtailingsfacilityEntrancetonewlevel1880adit

§  Firstandsecondphaseofthenewtailingsfacilitycompleted

§  Facilitybuilttointerna-onalstandards

§  Thirdphaseconstruc-onwillcommenceasrequiredbyopera-onalneeds

§  Fivebyfive,830meteradit

§  Directaccesstothenewlydiscoveredresources

§  Improvedundergrounddrillaccess

§  Capacitybeyond800tpd

800tpdprocessingfacility

§  Upgradestothecrushingandmillingcircuitincludinganewconecrusherandstrongerballmillmotors

§  Addi-onalflota-oncells

§  Upgradestothethickenerandvacuumdrumfilter

§  Newonsitelab

ADIT TAILINGSFACILITY PROCESSINGFACILITY

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EXPLORAT ION PROGRAMMineoverviewfromArchietarget

AdministraWveoffices

Mill

Coreshack

TailingsdaminremediaWon

ElRobleMine,Colombia

New1880adit

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E L ROB L E M INE V I C IN I T Y E XP LORAT ION PROGRAM Resourceupdatecompleted

Undergrounddrilling

§  HighCu-Augradesdefinedbelowthe2000metereleva-on,previousoperator’slowestproduc-onlevelatthecurrentlyproducingmine

§  Measuredandindicatedresourceof1.87Mtat3.46%Copper,2.27g/tGoldand8.87g/tSilverusingacut-offgradeof0.93%CuEq

§  Poten-altofurtherincreaseresourceattheElRoblemineasmineraliza-onisopenalongstrikeandatdepth

Coreshack

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E L ROB L E M I N E V I C I N I T Y E X P LORA T I ON P ROGRAM

Highgrademassivesulfidediscovered

ElRobleLongSecWon

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E L ROB L E M I N E V I C I N I T Y E X P LORA T I ON P ROGRAM

HighgrademineralizaWonconWnuesatdepth Intercept(m)

Body HoleID From To Interval(m) Cu(%) Au(g/t) Ag(g/t)Goliath ATDHR-01 109.2 151.0 41.7 6.54 1.82 7.43

Including 109.2 111.0 1.7 9.00 4.81 22.2 121.0 123.0 2.0 6.87 10.27 11.4 125.0 141.0 16.0 7.13 1.00 3.87 143.0 145.0 2.0 14.85 0.91 15.15

ATDHR-12 113.9 132.1 18.15 10.30 2.10 6.59Including

113.9 118.0 4.10 11.06 6.46 17.57120.0 122.0 2.00 15.91 0.78 3.23122.0 126.0 4.00 17.45 1.06 3.94

ATDHR-20 128.0 148.4 20.40 5.25 1.28 6.16

Maximus ATDHR-04 61.0 102.0 41.0 6.49 17.57 13.26Including 75.0 85.0 10.0 3.00 3.59 12.77

85.0 95.0 10.0 18.40 8.63 19.29 95.0 97.0 2.0 3.92 250.0 21.2 97.0 102.0 5.0 6.05 7.21 13.20

ATDHR-05 70.0 79.0 9.0 2.50 2.31 16.17Including 75.5 77.0 1.5 3.81 9.41 145.5

77.0 78.0 1.0 10.82 1.60 0.00ATDHR-17 71.8 160.5 88.70 5.41 2.48 10.83Including

71.8 75.2 3.40 11.50 7.22 13.77100.3 104.1 3.80 7.17 3.89 18.20141.1 149.5 8.45 12.96 1.09 12.70

Zeus ATDHR-26 144.0 263.7 119.7 6.89 6.26 16.50Including 145.8 156.3 10.43 11.68 14.14 33.83ATD-0003 158.8 245.20 86.4 5.04 3.71 8.69ATD-0004 155.7 225.75 70.1 6.26 1.85 7.93Including 186.4 225.75 39.53 7.50 1.31 5.67ATDHR-28 242.8 292.0 49.20 4.11 2.32 6.36Including 257.4 266.5 9.12 6.69 1.71 7.07

2012-15ExploraWonHighlights

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E L ROB L E M INE D I S TR I C T E XP LORAT ION UPS ID E

§  6,679con-guoushectarepropertywithlimitedandintermipentexplora-onoverthepast40years

§  10,000metersofdrillingbyKennecopandNipetsuattheminevicinitytodefinethehistoricalresources(1982-1986)

§  Con-nuousexplora-onprogramsbyA-cooverthepast5years,havedefined16regionaldrilltargets.

PastexploraWonprogramsfocusedonminevicinity

ElRoblemineandsurroundingclaims

ElRobleMineVMSwithaMeasuredand

Indicatedresourceof1.87Mt3.46%Cu,2.27g/tAuand8.00

g/tAg

ZeusmassivesulfideCoreshownfromhole26:119mof6.9%Cu,6.3g/tAu

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E L ROB L E M INE D I S TR I C T E XP LORAT ION UPS ID E

§  A-coiden-fiedandmappeda10kmstra-graphiccontactbetweenbasaltflowsandpelagicsedimentsthatcontrolmineraliza-on

§  Geochemicalprogram(1)andgeophysicalsurveys(2)haveoutlinedmul-pleVMStargetsoverthe10kmfavorablecontact

§  Only2of15districtgeochemicaltargetshavebeenpreviouslydrilled;ArchieandSantaAnita

§  A-coplanstodrillatleast2targetsin2016

§  Poten-alformoretargetstobediscoveredduringdistrictexplora-onoftheheavilyvegetatedterrain

PotenWaltodiscoveraddiWonalVMSbodies

(1)Geochemicalprogramcorrespondstorockchipandsoilsampling(2)GeophysicalsurveysconductedincludeIP,VTEM,magne-csurvey,

gravityanddown-holeEM GeologicalmapoffavorablecontactwithinElRobleclaims

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INVESTMENT H IGHL IGHTS Buildingaleadingmid-WerCu-Auproducer

ü Proventeamofminedevelopersandmineoperators

ü Industryexper-seandregionalnetworkü Focusedondevelopingandopera-nghighmarginmid-

sizedCu-Audeposits

ü Inproduc-onandgenera-ngcashflowatElRoblemine

ü UpsideatElRoblemine’sunderexploredlargelandpackagewithmul-plegeochemicalandgeophysicalVMSanomalies

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CORPORATEOFFICESuite501–543GranvilleSt.VancouverBCV6C1X8T:+1.604.633.9022

CONTAC T I N FORMAT I ON

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INVESTORRELATIONSIgorDuWnaidu4na@a4comining.com

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APPENDIX

ElRoblemineanalystvisit

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E L ROB L E M INE V I C IN I T Y E XP LORAT ION PROGRAM ResourceEsWmateTable

Note:1.  Themineralresourcees-mateupdatewaspreparedinaccordancewiththedefini-onsintheCanadianNa-onalInstrument43-101andbasedondatafrom

230drillholestotaling27,945meterscompletedbyA-co,during2010anduptoJune2015.2.  MineralResourcesareasdefinedbyCIMDefini:onStandardsonMineralResourcesandMineralReserves;3.  TheElRobleminecurrentlycontainsnoMineralReserves;4.  MineralResourcesthatarenotMineralReservesdonothavedemonstratedeconomicviability;5.  Therearenoknownlegal,poli-cal,environmentalorotherrisksthatcouldmateriallyaffectthepoten-aldevelopmentoftheMineralResourcesatElRoble;6.  ElRobleMineralResourcesarees-matedandreportedasofJune30,2015;7.  ElRobleMineralResourcesarees-matedandreportedataCuEquivalentof0.93%Cu,withCuEquivalentin%usingaCupriceofUSD$6,172/tonneCu

metalandUSD$1,200/tr.Oz.Auandcopperandgoldrecoveriesof93.5%and73%,respec-vely;8.  Totalsmaynotaddduetoroundingprocedures.

ContainedMetal

CuEqCutoff(%)

Tonnes(000)

CuEq(%)

Cu(%)

Au(g/t)

Ag(g/t)

CuLbs(000)

Auoz(000)

Agoz(000)

MeasuredResources

0.93% 791 4.94 3.68 2.61 10.06 64,189 66 256

IndicatedResources

0.93% 1,074 4.27 3.29 2.02 8.00 78,023 70 276

TotalMeasured+Indicated@0.93%CuEq.

0.93% 1,865 4.55 3.46 2.27 8.87 142,212 136 532

InferredResources

0.93% 255 4.75 4.1 1.34 5.21 23,042 11 43

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VMS DEPOS ITS Typicallyoccurinclusters

VMSDeposit

§  Volcanogenicmassivesulfidemineraldepositsareformedatornearthesea-floorbyvolcanicac-vity

§  VMSdepositsgenerallyoccurinclusters;raretofindjustasingledeposit

§  Over1,000knowndepositsfrom<1Mttoover300Mt,averagesize2.87Mttonnesof1.82%Cuand1.4g/tAu

§  Itispossibletoes-matethesizeandgradeoffuturediscoveriesinadistrictbasedontheknowndistribu-onofVMSdeposits

§  ColombiarepresentsanewVMSprovinceinSouthAmerica.

VMSdepositstypicallyoccurinclusters

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E L ROBLE MINE EXPLORAT ION UPS IDE

§  Mappingofmainlithologiesfor10kilometersthroughtheElRoblepropertythatcontrolmineraliza-on-stra-graphiccontactbetweenbasaltflowsandpelagicsediments

§  Wellunderstoodoccurrenceofmineraliza-oninfavorablelithology

§  Knowledgegainedfrommineinformsregionalexplora-on

§  Structuralcontrolss-llneedtobebeperunderstood

Wellunderstoodgeologicalmodel

SchemaWcRegionalConceptSecWon

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