Primary Commodity1TRIFID Facility Location State Majority owner DischargeMonitoringData in PCSor ICISNPDES2?Primary NPDES IDCopper 85631BHPCP28255 San Manuel Mill Pinal County, AZ AZ BHP Billiton N AZ0000004AZR05B265Copper 85237SRCNCHWY17 Ray Pinal County, AZ AZ Asarco LLC Y AZ0000035 AZR05B144 AZR05B145Copper None Resolution Copper Superior, AZ AZ BHP Billiton Y AZ0020389 AZR05A800Copper 85539BHPCPHWY60 Pinto Valley Gila County, AZ AZ BHP Billiton Y AZ0020401 AZU000087AZR05B546Copper 86321CYPRS1MAIN Bagdad Yavapai County, AZ AZ Freeport-McMoRan Copper & Gold, Inc. Y AZ0022268 AZU000101 AZR05B252Copper 85540PHLPS4521U Morenci Greenlee County, AZ AZ Freeport-McMoRan Copper & Gold, Inc. Y AZ0022705 AZU000005 AZU000172Copper 85548FRPRT85NFR Safford Mine Safford, AZ AZ Freeport-McMoRan Copper & Gold, Inc. NAZ0024309Copper 85532NSPRTPOBOX Miami Gila County, AZ AZ Freeport-McMoRan Copper & Gold, Inc. N AZ0024350 AZ0024350AZR05B292Copper None Iron King Yavapai County, AZ AZ Freeport-McMoRan Copper & Gold, Inc. Y AZ0024546AZR05B272Copper 85629SRCNC4201W Mission Complex Pima County, AZ AZ Asarco LLC N AZ0024597 AZ0024635 AZU000042Copper None known Chilito/Black Eagle Gila County, AZ AZAsarco LLC NAZR05B151Copper None Alta Alta, AZ AZAsarco LLC NAZR05B174 AZU000044 AZR05B175CopperNoneHelvetia Rosemont Pima County, AZ AZAsarco LLC NAZR05B176CopperNoneSacaton Unit Pinal County, AZ AZAsarco LLC NAZR05B177 AZU000069CopperNoneSalero Ranch Salero Ranch,AZ AZAsarco LLC NAZR05B178Additional NPDES IDs3pp,CopperNoneTrench Unit Trench Unit, AZ AZAsarco LLC NAZR05B179CopperNoneLone Star Mine Graham County, AZ AZ Freeport-McMoRan Copper & Gold, Inc.NAZR05B266CopperNoneUnited Verde Property United Verde Property, AZ AZ Freeport-McMoRan Copper & Gold, Inc.NAZR05B268 AZU000065CopperNoneMaid of Sunshine Cochise County, AZ AZ Freeport-McMoRan Copper & Gold, Inc.NAZR05B271CopperNoneCopper Basin Queen Creek, AZ AZ Freeport-McMoRan Copper & Gold, Inc.NAZR05B277CopperNoneClarkdale Tailing Area Clarkdale, AZ AZ Freeport-McMoRan Copper & Gold, Inc.NAZR05B278CopperNonePhelps Dodge Ajo Incorporated Ajo, AZ AZ Freeport-McMoRan Copper & Gold, Inc.NAZR05B281CopperNoneJohnson Camp Mine Yavapai County, AZ AZ NORD COPPER CORPORATIONNAZR05B377Copper None Copper Cities Gila County, AZ AZ BHP BillitonNAZR05B543 AZU000088Copper 85539BHPCPHWY6A BHP Miami Unit Miami, AZ AZ BHP BillitonNAZR05B545AZ0020401Copper 85653SLVRB25000 Silver Bell Marana, AZ AZ Asarco LLC N AZU000001AZR05B200Copper 85614CYPRS6200W Sierrita Pima County, AZ AZ Freeport-McMoRan Copper & Gold, Inc. N AZU000043 AZU000047AZR05B216Copper 86401QTRLM16MIL Mineral Park Mohave County, AZ AZ Mercator Minerals Ltd. N AZU000053AZR05B066CopperNoneCA Engels Mining Co Engels & S Greenville, CACACalifornia Engels Mining Co N NoneCopper None Savage Mining and Oil Company InOuray County, COCO Unknown N CO0043753Copper None Hecla Mining CoStanley, IDID Unknown Y ID0026468Copper 62982MRCNMFERRE American Minerals Inc. Rosiclare, IL IL Unknown NNoneCopper None Copper Range Co White Pine, MI MI Unknown Y MI0006114Copper None National Steel-Dober Mine CPX Stambaugh Twp, MI MI Unknown Y MI0045063Copper 59701MNTNR600SHContinental Pit Silver Bow County, MT MT Montana Resources YMT0000191Copper 59061SMCNY5MILE Stillwater MiningComanyNye, MTMT Unknown Y MT0024716 MTR300017 MTR300226pyCopper None Rock Creek MineNoxon, MTMTRevett Minerals Inc.Y MT0030287CopperNoneMontanore Mine ProjectLibby, MTMT Unknown N NoneCopper 88043CHNMN210COChino Grant County, NM NM Freeport-McMoRan Copper & Gold, Inc. YNM0020435NMR05GD16 NMR05A945Copper 88065PHLPSHWY90Tyrone Grant County, NM NM Freeport-McMoRan Copper & Gold, Inc. NNMR05GB76 NMR05A918Copper None Deming MillLuna County, NM NM Asarco LLCNNMR05GJ66 NMR05A847CopperNoneMagdalena Mill Socorro County, NM NM Asarco LLCNNMR05GK78 NMR05A848CopperNoneCookes Peak Luna County, NM NM Asarco LLCNNMR05GK80 NMR05A846Copper 89820CHBYM1MCCO Mccoy/Cove Mine Battle Mountain, NV NVNewmont Mining CorporationNNVR300000-10006 NVR300000-10060Copper 89319BHPCP7MILE Robinson White Pine County, NV NV Quadra Mining Ltd. NNVR300000-10047Copper 89415SMRLD28LUC Esmeralda Mine Hawthorne, NV NVMetallic Ventures IncNNVR300000-10135 NVR100000-10147Page 1 of 8Primary Commodity1TRIFID Facility Location State Majority owner DischargeMonitoringData in PCSor ICISNPDES2?Primary NPDES IDAdditional NPDES IDs3Copper None Mossy Creek Mining, Llc Gordonsville, TN TN Unknown Y TN0029360Copper 84006KNNCT12300Bingham Canyon Salt Lake County, UT UT Kennecott Minerals Company NNoneCopper 84006KNNCT8362W Kennecott Copper CoSalt Lake City, UTUT Unknown Y UT0000051CopperNoneOK Copper MineBeaver County, UTUT Nvada Star Resourse Corp N UTR000422Copper 84530LSBNV92SCULisbon Valley San Juan County, UT UT Constellation Copper Corp. NUTR000737Copper None Pathfinder Mines Corporation Carbon County, WY WY Unknown Y WY0001252Ferroalloy (except vanadium) None Christmas Facility Christmas, AZ AZ Freeport-McMoRan Copper & Gold, Inc. Y AZ0020516AZR05B280Ferroalloy (except vanadium)80438CLMXM9MILEClimax Molybdenum Co. (HendersoClear Creek County, CO COFreeport-McMoRan Copper & Gold, Inc. Y CO0041467Ferroalloy (except vanadium)83227THMPSSQUAWThompson Creek Custer County, ID ID Thompson Creek Metals Co. YID0025402Ferroalloy (except vanadium) None Northshore Mining Co;Cliffs Mn Babbitt, MN MN Cleveland-Cliffs Inc Y MN0046981Ferroalloy (except vanadium) None Mossy Creek Mining, Llc New Market, TN TN Unknown Y TN0057029Ferroalloy (except vanadium) 79922MRCNM3666D American Minerals Inc El Paso, TX TX Unknown NNoneGold None AJT Mining Properties, Inc.Juneau, AKAK Unknown Y AK0049514Gold None Kensington MineJuneau, AKAKCoeur d'Alene CorporationY AK0050571 AKR05CA54Gold 99707FRTKN1FORAFort KnoxFairbanks County,AK AK Kinross Gold CorporationN AKR05CB48Gold 99712TRNRT1TWIN True North MineFairbanks, AKAKFairbanks Gold Mining, Inc.N AKR05CB49Gold None Donlin Creek ProspectSeward Meridian, AKAK Donlin Creek LLC N AKR05CB73Gold None Lucky Shot Bulk Sampling ExploratWillow Mining District, AKAK Full Metal Minerals, USA, Inc. N AKR05CD95Gold 99627NXNFR32MIL Nixon Fork MineMcGrath, AKAK Mystery Creek Resources Inc. N AKR05CE85Gold 99752RDDGP13MIL Delong Mountain Transportation FaKotzebue, AKAK UnknownNNoneGold 99737PGMNX38MILPogo Northwest Arctic County, AK AK Teck Cominco Inc. NNoneGoldNoneSun Cloud Mine Sun Cloud Mine, AZ AZ Robert Whalen GatelyNAZR05B052GoldNoneHorton Claims Group Horton Claims Group, AZ AZ Freeport-McMoRan Copper & Gold, Inc.NAZR05B256 AZR05B312Gold 95457MCLGH26775 Homestake Mining Co Mclaughlin Lower Lake, CACAHomestake Mining Company N CA0081477Gold 93562CRBRGWINGA Cr Briggs Corp Trona, CA CACR Briggs CorpN NoneGold 93554GLMSR27850 Glamis Rand Mine Randsburg, CA CA Unknown N NoneGold 92227NWMNT6502E Western Mesquite Mines Inc Brawley, CA CAWestern Mesquite Mines IncN NoneGoldNoneBriggs Mine Project Panamint, CACACR Briggs Corp N NoneGoldNoneCal Sierra Development Inc Marysville, CACACal Sierra Development Inc. N NoneGold None Cunningham Hill Recl. ProjectSanta Fe County, NMNM Lac Minerals Inc Y NM0028711 NMR05GK12GoldNoneDickey Exploration Co Oriental Alleghany, CACADickey Exploration Co N NoneGoldNoneEmpire Mine SHP Grass Valley, CACACA Dept of Parks & Recreation N NoneGoldNoneLiberty Hill Mine Dutch Flat, CACALiberty Hill Mine Inc N NoneGoldNoneMohawk Mine Alleghany, CACAJan Sticha N NoneGoldNoneNew Era Mine Oroville, CACANorth Continent Land & Timber N NoneGoldNoneNorth Fork Mine Alleghan, CACANorth Fork MiningCorN NoneypGoldNoneOro De Amador Properties Jackson, CACAJackson City N NoneGoldNoneSutter Gold Mining Co Sutter Creek, CACASutter Gold Mining Company N NoneGoldNoneTelegraph & Dutch Mines Downieville, CACALazarus Mining LLC N NoneGoldNoneTuolumne Cnty Jamestown Mine Jamestown, CACATuolumne Cnty PWD N NoneGold 92309VCRYG11557 Viceroy Gold Corp Castle Mount Ivanpah, CACAViceroy Gold Corp N NoneGoldNoneWinkeye Consolidated Mines La Porte, CACAOGM Energy Resources N NoneGold None Homestake Mining CompanyMineral County, COCO Unknown Y CO0000710Gold 80860CRPPL2755SCresson Teller County, CO CO Cripple Creek & Victor Gold Mining Co. YCO0024562 CO0043648Gold None Gold King Mines CorporationSan Juan County, COCO Gold King Mines Corporation Y CO0027529Gold None Calais Resources Colorado, IncBoulder, COCO Unknown Y CO0032751Page 2 of 8Primary Commodity1TRIFID Facility Location State Majority owner DischargeMonitoringData in PCSor ICISNPDES2?Primary NPDES IDAdditional NPDES IDs3Gold None Walker Ruby Trust Mining Co.Ouray County, COCO Unknown N CO0037206Gold None London Mine LlcPark County, COCO Unknown Y CO0038334Gold None Platoro Mining Co&Union GoldConejos County, COCO Unknown Y CO0038954Gold None Prarie Center Metropolitan DistrictFairplay, COCO Unknown N CO0045209CopperNoneDos Pobres Mine Safford, AZ AZ Freeport-McMoRan Copper & Gold, Inc.NAZR05B263 AZ0024309Gold None Cripple Creek and Victor Gold MiniTeller County, COCOCripple Creek & Victor Gold Mining Co.N CO0046540Gold None The Turquoise ConnectionCripple Creek, COCO Unknown N COG600703Gold None Boulder Cnty Park and Open SpacNederland, COCO Unknown N COG600769Gold NoneGolden Wonder Hinsdale County, CO CO LKA International Inc. NNoneGold None Meridian Beartrack CoSalmon, IDID Unknown Y ID0027022 IDR05C215GoldNoneDelamar and Stone Cabin Mines Delamar, ID IDKinross Gold CorporationN IDR05C177Gold None Tvx Mineral Hill MineJardine, MTMT Unknown Y MT0030252GoldNoneYukon Mining Inc.UnknownMT Unknown N MT0030776GoldNoneTeras Resources Inc.UnknownMT Unknown N MT0031569Gold 59759GLDNS453MOGolden Sunlight Jefferson County,MT MT Barrick Gold Corporation Inc NMTR300012 MTR300199Gold None CR Kendall CorporationHilger, MTMT Canyon Resources N MTR300026Gold None CR Montana Corporation/Seven-upLincoln, MTMT Canyon Resources N MTR300085Gold None Newmont North American ExploratLincoln, MTMT Unknown N MTR300086GoldNoneM and W Millingand RefiningVirginia City, MTMT Unknown N MTR300139GoldNoneCoronado Resources USA LLCSilver Star, MTMT Unknown N MTR300248GoldNoneLodestar Mining & ExplorationBig Timber, MTMT Unknown N MTR300256 MT0030635GoldNone Bootstrap/Capstone/TaraElko County, NV NV Newmont Mining CorporationNNoneGold 89003BRRCKHWY37 Bullfrog Mine Beatty, NV NVBarrick Gold Corporation Inc NNoneGold 89821CRTZGSTARACortez Lander County, NV NV Barrick Gold Corporation Inc NNoneGold 89003GLMSD5MILEDaisy Gold Mining CompanyBeatty, NV NV UnknownNNoneGold 89045SMKYV1SMOKSmoky Valley Common Operation Nye County, NV NV Kinross Gold Corporation NNoneGold 89414NWMNT35MILTwin Creeks Golconda, NV NV Unknown NNV0021725 NVR300000-10087Gold 89438NWMNTSTONELone Tree Humboldt County, NV NV Newmont Mining Corporation NNV0021962 NVR300000-10002Gold NoneEastern Nevada Operations Elko County, NV NV Newmont Mining Corporation NNV0022268Gold 89803BRRCK27MILGoldstrike Mine Elko and Eureka Counties, NV NV Barrick Gold Corporation Inc NNV0022675 NVR300000-10059GoldNoneTonkin Springs Mine Eureka County, NV NV Tonkin Springs LlcNNVR300000-10008Gold None Kinross Gold Corp. Round MountaiNye County, NV NVRound Mountain Gold CorpNNVR300000-10010GoldNoneManhattan Mine Nye County, NV NV Round Mountain Gold CorpNNVR300000-10010GoldNoneHollister Operations Area Midas, NV NV Newmont Mining CorporationNNVR300000-10013Gold 89822NWMNT25MIL Newmont Mining Corp Carlin NorthCarlin, NV NVNewmont Mining CorporationNNVR300000-10014Gold 89822NWMNT6MAIL Newmont MiningCorCarlin SouthCarlin, NV NVNewmont MiningCororationNNVR300000-10015ppGoldNoneRain Operations AreaUnknownNV Newmont Mining CorporationNNVR300000-10016 NVU000739GoldNoneCortez Con Cortez Town Site HorsLander County, NV NV Cortez Gold MinesNNVR300000-10019Gold 89821CRTZGSTARA Gold Acres Pipeline S PipelineCLander County, NV NVBarrick Gold Corporation Inc NNVR300000-10021Gold 89406KNNCT55MIL Denton-Rawhide Mineral County, NV NV Kennecott Minerals Company NNVR300000-10025Gold 89418FLRDCEXIT1 Florida Canyon Pershing County, NV NV Jipangu Inc. NNVR300000-10031GoldNoneGetchell Mine Humboldt County, NV NV Placer Turquoise Ridge IncNNVR300000-10033Gold 89446HYCRF52MIL Crofoot Mine Humboldt County, NV NV Hycroft Resources And Development IncNNVR300000-10037Gold 89801JRRTT50MILJerritt Canyon Elko County, NV NV Queenstake Resources USA Ltd. NNVR300000-10041GoldNoneTinnell Mining Facility Clark County, NV NV Jetco Enterprises IncNNVR300000-10043Gold 89438GLMSM3MILE Marigold Humboldt County, NV NV Goldcorp Inc. NNVR300000-10048Page 3 of 8Primary Commodity1TRIFID Facility Location State Majority owner DischargeMonitoringData in PCSor ICISNPDES2?Primary NPDES IDAdditional NPDES IDs3GoldNoneAtlanta Mine And Mill Lincoln County, NV NV Bobcat Properties IncNNVR300000-10054Gold 89803BLDMN70MILBald Mountain White Pine County , NV NV Barrick Gold Corporation Inc NNVR300000-10058GoldNoneBig Springs Mine Elko County, NV NV Anglo GoldNNVR300000-10061GoldNoneCandelaria Mine Mineral County, NV NV Candelaria Mining CoNNVR300000-10067Gold 89414PNSNM22MIL Pinson Mine Humboldt County, NV NV Pinson Mining CoNNVR300000-10072GoldNonePreble Mine Humbodlt County, NV NV Pinson Mining CoNNVR300000-10073GoldNoneSterling Mine Nye County, NV NV Sterling Gold Mining CorpNNVR300000-10077GoldNoneDee Gold Mine Elko County, NV NV Glamis Dee Gold Mining CoNNVR300000-10083GoldNoneWind Mountain Mine Washoe County, NV NVKinross Gold Corporation NNVR300000-10097GoldNoneWood Gulch Mine Elko County, NV NV Homestake Mining CompanyNNVR300000-10098Gold 89803LLGTR90MIL Alligator Ridge Mine White Pine County, NV NV Bald Mountain MineNNVR300000-10101Gold 89803YNKMN95MIL Yankee Mine White Pine County, NV NV Bald Mountain MineNNVR300000-10102GoldNoneCasino Winrock Mine White Pine County, NV NV Bald Mountain MineNNVR300000-10103GoldNoneBuffalo Valley Mine Project Lander County, NV NV Fairmile Gold Mining Inc.NNVR300000-10106GoldNoneRobertson Project Lander County,NV NV Coral Resources,IncNNVR300000-10109Gold 89438NWMNTBEACO Mule Canyon Lander County, NV NV Newmont Mining Corporation NNVR300000-10110GoldNoneRosebud Mine Pershing County, NV NV Rosebud Mining Co LlcNNVR300000-10111Gold 89438NWMNTEIGHT Newmont Mining Corp Trenton CanValmy, NV NVNewmont Mining CorporationNNVR300000-10113GoldNoneMineral Ridge Mine Esmeralda County, NV NV Golden Phoenix Minerals IncNNVR300000-10114Gold 89414KNSNY60MIL Midas Elko County, NV NV Newmont Mining Corporation NNVR300000-10122GoldNoneToiyabe Lander County, NV NV Cortez Gold MinesNNVR300000-10125GoldNonePass Minerals Inc Clark County, NV NV Pass Minerals IncNNVR300000-10126GoldNoneMooney Basin Project White Pine County, NV NV Bald Mountain MineNNVR300000-10127GoldNoneStorm Exploration Decline Project Elko County, NV NV Barrick Gold Corporation IncNNVR300000-10130GoldNoneNick Mining Claims Pershing County, NV NV Gold Run MinesNNVR300000-10131GoldNoneSpring Valley Mine Lyon County, NV NV Geo Nevada IncNNVR300000-10133GoldNoneL & H Claims Placer Mining Pershing County, NV NV Black Gold MiningNNVR300000-10134GoldNoneHeap Leach Facility Storey County, NV NV Plum Mining Co LlcNNVR300000-10136GoldNoneWillow Creek Mine (thacker ProperPershing County, NV NV Western Placer Resources IncNNVR300000-10137GoldNoneCoyote Mine Pershing County, NV NV Rock Solid IncNNVR300000-10139GoldNone327 Apex Mine Washoe County, NV NV Target Minerals IncNNVR300000-10141GoldNoneDun Glen Mine Pershing County, NV NV Vector Mining IncNNVR300000-10142Gold 89418FLRDCEXIT1 Standard Pershing County , NV NV Jipangu Inc. NNVR300000-10143GoldNoneSunroc - Mesquite Clark County, NV NV Sunroc CorporationNNVR300000-10144GoldNoneImlay Mines Pershing County, NV NV Imperial Milling IncNNVR300000-10145GoldNoneHollister Development Block ProjecElko County, NV NV Richard N ApplinNNVR300000-10146jgGoldNoneContact Exploration Project Elko County, NV NV Golden Phoenix Minerals IncNNVR300000-10148Gold 89414GTCHL28MINTurquoise Ridge Humboldt County , NV NV Unknown NNVU000006Gold 89820BTTLMCOPPE Phoenix Lander County , NV NV Newmont Mining Corporation N NVU000007Gold 57754HMSTK630ES Homestake Mining Co-Gold Div Lead, SD SD Unknown Y SD0000043 SD0025933Gold 57754WHRFRTROJA Wharf Lawrence County , SD SD Wharf Resources Inc. y SD0025852Gold None LAC Minerals (USA+D221) Inc Lead, SD SD Unknown Y SD0026883Gold None Golden Reward Mining Co Lead, SD SD Unknown Y SD0026905Gold None Homestake Mining Company Lead, SD SDUnknownN SDP000119Gold 37881SVGZNRTE13 Mossy Creek Mining, Llc Thorn Hill, TN TN Unknown Y TN0060127Gold None Asarco, Inc. Tn Mines Div. Jefferson City, TN TN Unknown Y TN0061468Page 4 of 8Primary Commodity1TRIFID Facility Location State Majority owner DischargeMonitoringData in PCSor ICISNPDES2?Primary NPDES IDAdditional NPDES IDs3Gold None Mossy Creek Mining, Llc Carthage, TN TN Unknown Y TN0064289Gold 84006KNNCT8200SBarney's Canyon Salt Lake County, UT UT Kennecott Minerals Company NNoneGold None Internation Uranium (USA) CorpSan Juan County, UTUT Unknown Y UT0023922Gold None USMK of UtahUnknownUT Unknown N UTR000290Gold None Clifford SorensenUnknownUT Unknown N UTR000648Gold 99118CHBYN2400W K2 MineCurlew, WAWA UnknownNNoneGold 99166KTTLR363FI Kinross Gold Corp. Kettle River OpRepublic, WAWA UnknownNNoneGold 99166LMFTMINTER Lamefoot MineFerry County, WAWAKinross Gold Corporation NNoneGold None Dawn Mining CoWellpinit, WAWA Unknown Y WA0025721Gold None Pathfinder Mines Corporation Fremont County, WY WY Unknown Y WY0003131Gold None Gyovary, Stephen Unk, WY WYUnknownN WY0033618Gold None Green Mountain Mining Venture Fremont County, WY WY Unknown N WY0033952 WY0025950Gold None Great Lakes Metals Co Unk, WY WYUnknownN WY0036056Gold None Warren Anderson Bill, WY WYUnknownN WYR000857Gold None RPM WyominInc. Unk,WY WYUnknownN WYR001059g,Iron None Pogo MineDelta Junction, AKAK TECK-POGO INC Y AK0053341 AKR05CA46Iron None Reserve Mining Co. - Silver Bay ScSilver Bay, MNMNUnknown N C00018542Iron None Hunter Gold Mining, Inc.Gilpin County, COCO Unknown Y CO0043168Iron None Specie Ridge Holding Co., Inc.Dolores County, COCO Unknown Y CO0045756Iron None New Cardinal LLCBoulder County, COCO Unknown Y CO0046167Iron None Sunshine Precious Metals IncOsburn, IDID Unknown Y ID0000159Iron None Hibbing Taconite Co. - Mining AreaHibbing, MNMNCleveland-Cliffs Inc N MN0001465Iron None Midland Research CenterPengilly, MNMNUnknown N MN0020249Iron None KeetacKeewatin, MNMNUnited States Steel Corporation N MN0031879Iron None Cliffs Erie - Hoyt Lakes Mining AreaHoyt Lakes, MNMNUnknown N MN0042536Iron None Cliffs Erie - Dunka Mining Area Babbitt, MNMNUnknown N MN0042579Iron None United Taconite LLC - ThunderbirdEveleth, MNMNCleveland-Cliffs Inc N MN0044946Iron None Hibbing Taconite Co. - Tails BasinHibbing, MNMNCleveland-Cliffs Inc N MN0049760Iron None Minntac WWTPMountain Iron, MNMNUnited States Steel Corporation N MN0050504Iron None United Taconite Fairlane/TailingsBForbes, MNMNCleveland-Cliffs Inc N MN0052116Iron None Minntac Mining AreaMountain Iron, MNMNUnited States Steel Corporation N MN0052493Iron None Cliffs Erie - HL Tailings Basin AreaHoyt Lakes, MNMNUnknown N MN0054089Iron None Keewatin Taconite Operations - TaKeewatin, MNMNUnknown N MN0055948Iron None Minorca Mine Virginia, MNMNArcelorMittal Minorca Mine Inc. N MN0055964Iron None Minntac Tailings Basin AreaMountain Iron, MNMNUnited States Steel Corporation N MN0057207Iron None Laurentian Mine Gilbert, MNMNArcelorMittal Minorca Mine Inc. N MN0059633Iron None Essar Steel Minnesota LLC Nashwauk, MNMNUnknown N MN0068241Iron None Mesabi MiningHoyt Lakes, MNMNUnknown N MN0069078Iron None Upland Wings Sullivan, MO MO Wings Enterprises Y MO0000574Iron None Kennecott/Ridgeway Gold Mine Ridgeway, SC SC Unknown Y SC0041378Iron None Aabalon Moving Services Inc Unknown WYUnknownN WYG990999Iron None JR Simplot Company Atlantic City, WY WYUnknownN WYR000124IronNoneBaxter Mine San Bernadino County, CACAHahm International Inc N NoneIronNoneCA Portland Cement Baxter, CACACalifornia Portland Cement N NoneIron None CF & I Pit Lawrence County, SD SD Pete Lien & Sons Inc. NNoneIronNoneDredge 21 Yuba County, CACACal Sierra Development Inc. N NonePage 5 of 8Primary Commodity1TRIFID Facility Location State Majority owner DischargeMonitoringData in PCSor ICISNPDES2?Primary NPDES IDAdditional NPDES IDs3IronNoneSilverlake Mine San Bernadino County, CACAHahm International Inc N NoneLead 85603PHLPS36WHW Copper Queen Branch Bisbee, AZ AZ Freeport-McMoRan Copper & Gold, Inc. NAZR05B260 AZR05B412Lead None Mining Remedial Recovery Co Redding, CA CA Unknown Y CA0081876Lead None Climax Molybdenum CompanyGunnison County, COCO US Energy/Crested Corp. Y CO0035394Lead None Hecla Mining CoMullan, IDID Unknown Y ID0000167Lead None Noranda Mining IncCobalt, IDID Unknown Y ID0025259Lead None Empire Iron Mining Partnership Palmer, MI MI Cleveland-Cliffs Inc Y MI0000094Lead None Doe Run, Viburnum Div Viburnum, MO MO Doe Run Resources Corp. Y MO0000086Lead None Cominco, Magmont Mine Bixby, MO MO Teck Cominco Inc. Y MO0001872Lead 63638SWTMMHIGHW Doe Run, Sweetwater Mine/Mill Ellington, MO MO Doe Run Resources Corp. Y MO0001881Lead None Doe Run, West Fork Unit Bunker, MO MO Doe Run Resources Corp. Y MO0100218Lead None Doe Run,Viburnum Mine #35 Viburnum, MO MO Doe Run Resources Corp. Y MO0100226Lead None Montana Gold & Sapphires IncLewis And Clark County, MTMT Unknown N MT0025020Lead None M & W Milling & Refining IncVirginia City, MTMT Unknown Y MT0030015Lead None Asarco Inc(Mike Horse)Lewis And Clark Coun,MTMT Unknown Y MT0030031)Lead 88031MRCNM2010F American Minerals IncDeming, NMNM UnknownNNoneLead 89316RBYHLINTER Ruby Hill Mine Eureka, NV NVHomestake Mining CompanyNNVR300000-10120Lead None Pierrepont Mine Pierrepont Manor, NY NY Unknown Y NY0109126Lead None Mossy Creek Mining, LLC Elmwood, TN TN Unknown Y TN0004227Lead 19720MRCNM301PI American Minerals Inc. New Castle, DE DE Unknown NNoneLead None Doe Run Resources Corp. ViburnuIron County, MO MO Doe Run Resources Corp. NNoneLead 44095SKLDC34580 Skrl Die Casting Inc Eastlake, OH OH Unknown NNoneLead 99752RDDGP90MILRed Dog Northwest Arctic County , AK AK Teck Cominco Inc. YAK0038652Lead 63629BRSHYHWYKK Doe Run, Brushy Creek Mine/Mill Reynolds County , MO MO Doe Run Resources Corp. Y MO0001848Lead 63629FLTCHHWYTT Doe Run,Fletcher Mine/Mill Reynolds County,MO MO Doe Run Resources Corp. Y MO0001856Lead 65440BCKMNHWYKK Doe Run, Buick Iron County , MO MO Doe Run Resources Corp. Y MO0002003Lead 59638MNTNT5MILEMontana Tunnels Jefferson County , MT MT Apollo Gold Corp. YMT0028428 MTR300264Lead 65566VBRNMCASTE Viburnum #29 and #35 Washington and Iron County,MMO Doe Run Resources Corp. NNoneLead/Zinc 59635SRCNCSMELT Asarco LLCHelena, MTMT Unknown N MTR300157Lead/Zinc None Jordanelle Special Service DisHeber City, UTUT Unknown Y UT0022403Lead/Zinc None Lexco, Inc.(E)Vernal, UTUT Unknown N UT0025259Lead/Zinc None TME - AR Mine #1 C.O TME AsphaUnknownUT Unknown N UTR001061Gold None Ren Mine Reclamation Project Elko County NV Homestake Mining CompanyNNVR300000-10116Miscellaneous Ores, NEC None Lee Wynne and PacificorpOphir, COCO Unknown N CO0046931Miscellaneous Ores, NEC 59011STLLWPOBOX East Boulder MineSweetgrass County, MTMT Stillwater Mining Company Y MT0026808Miscellaneous Ores, NEC None Barrett's Minerals Inc.Dillon, MTMT Unknown N MT0030678Miscellaneous Ores, NEC None Asarco IncUnknownUT Unknown N UTR000086Miscellaneous Ores, NEC None Asarco, Inc. - Northwestern MiningUnknownUT Unknown N UTR000087Miscellaneous Ores, NEC None Topaz MineUnknownUT Unknown N UTR000167Miscellaneous Ores, NEC None United Park City MinesUnknownUT Unknown N UTR000621Miscellaneous Ores, NEC None Lilyama Historical Mine El Dorado, CACARosenberg, John N NoneMiscellaneous Ores, NEC 92366MLYCRI15AN Mountain Pass Mine Mountain Pass, CACAMolycorp Minerals LLC N NoneMiscellaneous Ores, NEC None Wajona Inc Cambria Mine Cambria, CACAWajona Inc N NoneMolybdenum 80468CLMXM19302 Climax Molybdenum CompanyGrand County, COCO Freeport-McMoRan Copper & Gold, Inc. Y CO0000230Molybdenum None Climax Molybdenum CompanySummit County, COCO Freeport-McMoRan Copper & Gold, Inc. Y CO0000248Molybdenum NoneQuesta Taos County , NM NM Chevron Mining, Inc. YNM0022306 NMR05GC01Page 6 of 8Primary Commodity1TRIFID Facility Location State Majority owner DischargeMonitoringData in PCSor ICISNPDES2?Primary NPDES IDAdditional NPDES IDs3Silver None Carlota Copper Company Miami, AZ AZ Quadra Mining Ltd. Y AZ0024112AZR05B233Silver None Silver King Mining Company Pinal, AZ AZ RONALD R DEENNAZR05A91FSilver None Ressurction Mining Company (AsaLake County, COCO Unknown Y CO0000591Silver 83873SLVRVLAKEGGalena Shoshone County, ID ID U.S. Silver Corporation YID0000027 ID0025429 IDR05A419Gold None Santa Fe Reclamation Project MineMineral County NV Homestake Mining CompanyNNVR300000-10123Silver 83846LCKYFI90EXLucky Friday Shoshone County, ID ID Hecla Mining Company YID0000175 IDR05A396Silver None Coeur Mine Osburn, ID IDU.S. Silver CorporationN IDR05C299Silver None Caladay Project Wallace, ID ID U.S. Silver - Idaho, Inc N IDR05C300Silver None Crescent Mine Kellogg, ID ID Crescent Inc. N IDR05C362Silver None Hecla Limited Star/Morning Wallace, ID IDHecla Mining CompanyN IDR05C421Silver None Hecla Limited National Mullan, ID IDHecla Mining CompanyN IDR05C422Silver None Hecla Limited Vienna Wallace, ID IDHecla Mining CompanyN IDR05C424Silver None Grouse Creek Unit Stanley, ID IDHecla Mining CompanyN IDR05C429Silver None Hecla Limited Hercules Wallace, ID IDHecla Mining CompanyN IDR05C440Silver None Hecla Limited Interstate Wallace,ID IDHecla MiningComanyN IDR05C441pySilver None Hecla Limited Snowstorm Mullan, ID IDHecla Mining CompanyN IDR05C442Silver None Hecla Limited Stanley Wallace, ID IDHecla Mining CompanyN IDR05C443Silver None Hecla Limited Tamarack Wallace, ID IDHecla Mining CompanyN IDR05C444Silver None Hecla Limited Tiger/Poorman Wallace, ID IDHecla Mining CompanyN IDR05C445Silver None Hecla Limited Carlisle Wallace, ID IDHecla Mining CompanyN IDR05C446SilverNoneTilden Mining Co Ishpeming, MI MI Unknown Y MI0038369Silver None Montanore MineLincoln County, MTMT Noranda Minerals Corp Y MT0030279 MTR102278SilverNoneCarlin Mines Operations Elko, Eureka, Humboldt, and LaNV Newmont Mining Corporation N NoneSilver NoneTroy Lincoln County , MT MT Revett Minerals Inc. NNoneSilver None HilltopLander County NV Cortez Gold MinesNNVR300000-10020Silver 89419CRRCH180EX Rochester Pershing County , NV NV Coeur d'Alene Corporation N NVU000003 NVU000012NVR300000-100Unknown None New Fields Inc.Red Cliffe, COCO Unknown N COG600181Unknown None American Colloid Co Gascoyne Bowman County, ND ND Unknown N ND0026077Unknown None known Blackhawk Mill Grant County, NM NM RECWEST INC N NMR05A873Unknown None known SPICA MINES SITE 01 Catron County, NM NM SPICA MINES LLC N NMR05B083Unknown None Cobre Mining Company Grant County, NM NMFreeport-McMoRan Copper & Gold, Inc.N NMR05GB66 NMR05A948Unknown None Cyprus Pinos Altos Grant County, NM NMFreeport-McMoRan Copper & Gold, Inc.N NMR05GB67 NMR05A924Unknown None Deming Tailing Area Luna County, NM NMFreeport-McMoRan Copper & Gold, Inc.N NMR05GB68 NMR05A922Unknown None Section 35 Mine Mckinley County, NM NMRio Algom Mining LLC NNMR05GC54 NMR05A915Unknown None Waldo Socorro County, NM NM Asarco LLCNNMR05GK79Unknown None Dynatec DrillingSupplies, IncUnknownUT Unknown N UTR000053g ppUnknown None RDW, LLSUnknownUT Unknown N UTR000655Unknown None Washington Mine French Gulch, CACAFrench Gulch Nevada Mining Corp N NoneUranium NoneRio Algom Mining LLC/Ambrosia LaGrants, NM NM Rio Algom Mining LLC YNM0020532Uranium NoneRio Grande Resources CorporationSan Mateo, NM (Cibola CountyNM Rio Grande Resources Corporation YNM0028100NMR05GB27 NMR05A809Uranium None Rio Puerco Uranium MineMilan, NMNMMineral Energy & Technology CorpY NM0028169Uranium/Radium/Vanadium None Cotter CorporationGolden, COCO Unknown Y CO0001244Uranium/Radium/Vanadium None Homestake Mining Company of CaSargents, COCO Unknown Y CO0022756Uranium/Radium/Vanadium None Leadville CorporationLeadville, COCO Unknown Y CO0027014Uranium/Radium/Vanadium None Cotter CorporationNaturita, COCO Unknown Y CO0036251Uranium/Radium/Vanadium None US Department of Energy/SM StroDurango, COCO Unknown Y CO0041548Page 7 of 8Primary Commodity1TRIFID Facility Location State Majority owner DischargeMonitoringData in PCSor ICISNPDES2?Primary NPDES IDAdditional NPDES IDs3Uranium/Radium/Vanadium None Energy Fuels Resources CorpGateway, COCO Unknown N CO0047562Uranium/Radium/Vanadium NoneNorthshore Mining/Silver Bay P Silver Bay, MN MN Cleveland-Cliffs Inc Y MN0055301Uranium/Radium/Vanadium NoneHaile Gold Mine Kershaw, SC SC Unknown Y SC0040479Uranium/Radium/Vanadium None Energy Fuels Resources CorporatiUnknownUT Unknown N UT0025712Uranium/Radium/Vanadium None Denison Mines (USA) CorpUnknownUT Unknown N UTR000828 UTR010215 UTR000829Uranium/Radium/Vanadium NoneKennecott Uranium Company Unknown WYUnknownN WY0026889Uranium/Radium/Vanadium NoneCogema Mining, Inc. Unk, WY WYUnknownN WY0033642Uranium/Radium/Vanadium NoneGreen Mountain Mining Venture Natrona, WY WYUnknownN WYR000283Uranium/Radium/Vanadium NoneGreen Mountain Mining Venture Jeffrey City, WY WYUnknownN WYR000284Uranium/Radium/Vanadium NoneUS Energy Corporation Unk, WY WYUnknownN WYR000285 WYR320008Uranium/Radium/Vanadium NoneUmetco Minerals Corporation Natrona County, WY WYUnknownN WYR000380Uranium/Radium/Vanadium NonePower Resources, Inc. Coinverse County, WY WYUnknownN WYR000648Uranium/Radium/Vanadium NoneCogema Mining, Inc. Unk, WY WYUnknownN WYR000904Uranium/Radium/VanadiumNone Kennecott Uranium Company Unk, WY WYUnknownN WYR101081 WY0026689Zinc 99801KNNCT13401Greens Creek Juneau CountyAK AK Kennecott Minerals CompanYAK0043206,yZinc 13642ZCMNS408SY Balmat St. Lawrence County , NY NY Hudbay Minerals Inc. Y NY0001791Zinc 37760SRCNC420WB ETZC Coy Mine Jefferson City, TN TNGlencore International AG YTN0001732Zinc 37871SRCNC1977W ETZC Young Mine and Mill Strawberry Plains, TN TNGlencore International AG YTN0001741 TN0027677Zinc 37806SRCNC2160I ETZC Immel Mine Mascot, TN TNGlencore International AG YTN0001759Zinc 99153PNDRL1382PPend Oreille Pend Oreille County, WA WA Teck Cominco Inc. NWA0001317 WAR001204Copper None Zonia Mine Yavapai County, AZ AZ ARIMETCO INCNAZR05B690 AZU000026 AZU000091Copper 79915PHLPS897HA El Paso Refinery El Paso, TX TXFreeport-McMoRan Copper & Gold, Inc.N NoneCopper 79120SRCNCHWY13 Amarillo Refinery Amarillo, TX TX Asarco LLC N TX01184601Determined in some cases from Primary SIC Code2Indicates monitoring data associated with the primary NPDES ID3Indicate NPDES IDs that correspond to other permits (stormwater or industrial) associated with the facility listed. Additional NPDES IDs were identified primarily through Envirofacts.Source:2004 USGS Minerals Yearbook,2006 USGS Minerals Yearbook,2007 USGS Minerals Yearbook,PCSLoads2004_v4, DMRLoads2007_v3, TRICalculations2007_v2,and EPA'sEnvirofactsDatabase(available online at: http://www.epa.gov/enviro).Page 8 of 8