pROJECT hISTORY

ClientProjectLocationStart DateEnd DateDescription of WorkDrifting, Ft.Ore TonsBackfill Tons
Barrick Goldstrike Mines Inc.El Ni¤oCarlin, NV07/08/2018In ProgressHighwall stabilization, Two Portals, 16′ x 17′ Development, 15′ x 15′ Drift and Fill, CRF, Full Production Mining44500
Newmont Mining Corp.Twin U/GGolconda, NV07/05/2017In Progress14′ x 16′ Development, 14′ x 16′ Sill Cuts, Long Hole Stoping, Backfilling, Full Production Mining19,938284,186244,666
Newmont Mining Corp.LeevilleCarlin, NV08/01/2014In Progress15′ x17′ Development, Mining, Backfilling, Rehabilition, Installation of paste fill lines, various cellular filling31,374215,973427,638
Jerritt Canyon GoldSSXElko, NV06/12/2014In Progress15′ x 15′ Development, Drift & Fill Mining, CRF, Shotcrete, Cubex drilling37,9801,853,3162,026,000
Newmont Mining Corp.ChukarCarlin, NV09/01/2011In ProgressPortal, 16′ x 16′ Development, LHS & C&F Mining31,2002,946,0001,919,000
Jerritt Canyon GoldSmithElko, NV03/01/2010In Progress15′ x 15′ Development, Drift & Fill Mining, CRF, Shotcrete (as of 12/14)86,6503,414,0002,699,000
CRG Mining LLCGold Links MineOhio City, CO07/01/20174/30/2018New Portal, 15′ x 15′ development, drifting on vein, stope mining, support drilling efforts1,1271,5000
Newmont Mining Corp.Vista (Twin U/G)Golconda, NV01/03/201610/15/201614′ x 16′ Development,14′ x 16′ Sill Cuts, Long Hole Test Stoping, Backfilling, Drill Support8008,0009,000
Carlin ResourcesHollisterMidas, NV5/15/20169/30/2016Rehabilitation of Existing Workings, Support for various tours000
Jerritt Canyon GoldStarvation CanyonElko, NV10/01/20124/26/2016Portal, 15′ x 15′ Development, Establish Surface Infrastructure, Longhole stoping, limited cut and fill, CRF16,800769,730660,230
Gullsil, LLCDiamond MineEureka, NV9/14/20151/15/2016Open historic portal, rehab 1,500′ of 4′ x 6′ tunnel000
Atna ResourcesPinsonHumboldt County, NV5/20/201412/31/201515′ x 15′ Development, 13′ x 15′ cut and fill, limited long hole stoping, CRF backfill and Cubex definition drilling3,40075,00062,000
Juniper Mining, LLCGolden ChestMurray, Idaho07/01/201410/11/201513′ x 15′ Development, Drift & Fill Mining, CRF Backfill, Narrow Vein6,15956,00039,783
Waterton Global Mining Co.HollisterMidas, NV08/11/20147/31/201516′ x 16′ Exploration Drive, Miscellaneous Rehab of existing workings.1,29200
Mojave Desert MineralsGold RoadOatman, AZ10/01/20141/23/2015Haulage Only Contract020,0000
Newmont Mining Corp.Leeville MiningCarlin, NV06/01/200506/12/201415′ x 17′ Development, 15′ x 15′, 15′ x 20′ Ore dev., LHS, Shotcrete83,0001,850,0004,500,000
Stockpile Reserves LLCFencemaker MinePershing Co., NV07/01/20133/31/2014Rehabilitate existing portal and workings, extract new ore14200
Curtis TungstenAndrew MineSan Gabriel Mountains, California11/01/20131/31/2014Rehabilitate exisiting mine, drive secondary escape, stoping706000
Newmont Mining Corp.Carlin East / Full HouseCarlin, NV02/01/200912/31/2013Combination LHS and underhand drift and fill to finish the mine25,000389,100410,000
Veris Gold CorporationSSXElko, NV6/25/20125/31/201315′ x 15′ Development, Drift & Fill Mining, CRF, Shotcrete3,50085,00056,000
Newmont Mining Corp.VistaGolconda, NV2/15/20114/30/2013Two Portals, 16′ x 16′ Exploration Drive, Diamond Drill Stations16,3009,0000
Newmont Mining Corp.MidasMidas, NV1/15/20103/22/201316′ x 17′, 15′ x 15′, and 9′ x 12′ Development, 7′ x 12′ Cut & Fill, Cellular Concrete Backfill27,70045,0002,000
Klondex Gold & Silver Mining CompanyFire CreekCrescent Valley, NV10/01/20101/20/2013Construct surface facilities, portal, exploration decline.5,000
Newmont Mining Corp.Pete BajoCarlin, NV11/15/201012/31/2012Two Portals, 16′ x 16′ Development, Drift & Fill Mining, (As of 12/12)20,300323,000313,000
Highlands, LLCButte HighlandsButte, MT01/01/201006/01/201214′ x 16′ Development, Drill Stations, Exploration Project. Assist drilling effort while on stand-by.4,500
Newmont Mining Corp.Exodus – Phase 2Carlin, NV01/01/20103/31/2012Portal #2, 16′ x 16′ Exploration Decline, 15′ x 15′ Development, LHS Mining23,80055,00012,500
Newmont Mining Corp.Deep StarCarlin, NV07/01/201010/01/2011Access historic 5050 and 4440 levels. Mine approximately 15,000 tons of ore.1,75022,00026,000
Genesis, Inc.Genesis MineTroy, MT02/01/201010/30/2010Drive 3,300′ of 20′ x 20′ Decline to access new ore block3,300
Newmont Mining Corp.Chukar FootwallCarlin, NV01/01/200212/31/2009Portals, 15′ X 15′ development, LHS & C&F mining52,0002,620,0001,250,000
Great Basin GoldEsmeralda MineHawthorne, NV7/20/200910/01/2009Re-establish surface, dewatering, rehabilitation of 300′ of 11′ x 12′
Newmont Mining Corp.Deep PostCarlin, NV5/15/200909/01/2009Rehabilitation and active heading shotcrete application
Newmont Mining Corp.MidasMidas, NV03/10/20095/15/2009Mechanized bolting and support services for decline cave-in
Newmont Mining Corp.Exodus – Phase 1Carlin, NV9/15/20085/15/2009Portal, 16′ x 16′ Exploration Decline, Drill Stations6,300
Mines ManagementMontanoreLibby, MT8/15/20084/30/2009Rehabilitation and pumping water in 18′ x 18′ Decline, Various training
Genesis, Inc.Genesis MineTroy, MT07/01/200812/20/2008Grout, Stabilize and drive through three fault zones, Mine room & pillar 20′ x 20′20040,000
Newmont Mining Corp.Full HouseCarlin, NV07/01/20088/30/2008Rehabilitation of 1,500′, 15′ x 15′ Exploration Drift, Drill Stations850
Yukon Nevada GoldSmithElko, NV07/01/20088/15/200815′ x 15′ Development, Drift & Fill Mining, CRF, Shotcrete5002,0001,000
Barrick GoldPinson IIGolconda, NV01/02/20086/30/200814′ x 16′ Development and Drill Stations1,500
Placer Dome / BarrickGolden Sunlight 2Whitehall, MT12/20/20066/30/2008Portals, 15′ x 15′ Development, LHS, Rehab of GS #110,000375,000
Barrick / Meridian JVStormCarlin, NV07/10/20066/30/2008Rehabilitation, 15′ x 15′ Development, Drift & Fill Mining, Shotcrete10,000160,000150,000
Placer Dome / BarrickCortez HillsCrescent Valley, NV11/20/20056/30/2008Portals, Twin 17′ x 18′ Developments, Various constructions22,200
Placer Dome / BarrickGetchellGolconda, NV12/20/200206/01/2008Rehabilitation, 14′ x 14′ Drifting, Drift & Fill, LHS, CRF25,0001,750,0001,300,000
Molycorp, Inc.QuestaQuesta, NM01/10/20068/15/200711′ x 11′ Developments on draw point level12,500
Barrick GoldWeird IICarlin, NV12/01/200502/01/2007Portal, 15′ x 15′ Develoment, Underhand Drift and Fill2,00080,00050,000
Atna ResourcesPinsonGolconda, NV06/01/200504/01/2006Portals, U/G shop, 14′ x 16′ Development, Drill stations3,000
Newmont Mining Corp.Carlin EastCarlin, NV08/10/200402/01/2006Combination LHS and underhand drift and fill to finish the mine1,00085,00050,000
Newmont Mining Corp.Carlin MainCarlin, NV08/10/200402/01/2006Combination LHS and underhand drift and fill to finish the mine50014,00010,000
Barrick GoldWeird ICarlin, NV08/01/200501/01/2006Portal, 15′ x 15′ Develoment, Underhand Drift and Fill50020,00012,000
Barrick GoldBetze DriftCarlin, NV08/01/200411/01/2005Portal, 17′ x 17′ Development to Rodeo plus Exploration drifting4,000
Snowbird ResortPeruvian TunnelSalt Lake City, UT8/17/200510/15/2005Portals, 11′ x 13′ tunnel through the mountain, shotcrete finished 9/2006.600
Queenstake Resources, USASteer ProjectElko, NV04/01/200412/15/200414′ x 16′ Development and Cubex Drilling5,000
Queenstake Resources, USAMCE ProjectElko, NV06/01/20047/20/2004Finishes LHS work at MCE while Steer was ramping up31,000
Barrick GoldStorm Exploration DriftCarlin, NV04/01/200407/10/200415′ x 15′ Development, Drifting for stope access, Cubex drilling2,000
Placer Dome, LTDGolden SunlightWhitehall, MT07/10/200202/01/2004Portals, 14′ x 14′ Development drifting, LHS mining9,150520,000
Barrick GoldStorm RehabilitationCarlin, NV5/15/20038/15/2003Rehabilitation and reinstallation of utilities for 3,600′
Billings Bench Water Dist.Water TunnelBillings, MT03/10/20034/15/2003Shotcrete and bolting only
Phelps Dodge Corp.Henderson U/GHenderson, CO6/15/200203/01/2003Initial project was 7′ x 8′ water drifts, ended with 25′ x 33′ draw points3,000
Canyon Resources Corp.Briggs NorthTrona, CA9/15/20018/31/2002Portal, 14′ x 14′ Development, Inclined room and pillar with 75% extraction1,500120,000
Anglo Gold Corp., USASmith MineElko, NV11/15/20014/15/200215′ x 15′ Development drifting and stope preparations2,500
Newmont Mining Corp.SMD Rain Sub-ContractCarlin, NV04/10/19994/15/2002Continued Rain mining on a guaranteed $ / ounce delivered to portal6,000421,00025,000
Vortex MiningVortex MineUtica, MT10/01/200012/20/20018′ x 9′ Trackless development plus 20,000′ Cubex RRC drilling3,00075,000
Newmont Mining Corp.Deep PostCarlin, NV4/15/19998/29/2001Portals, 14′ x 15′ Multiple developments with various construction activity13,50035,000
Echo Bay Minerals Corp.Cove East, Cove SouthBattle Mountain, NV3/15/19997/15/2001Portals, 12′ x 12′ Development, LHS w/ delayed CRF and underhand drift & fill8,500350,000140,000
Pegasus Gold Corp.Diamond Hill MineTownsend, MT2/15/199612/20/2000Portal, 14′ x 14′ Development with LHS and remote mucking12,000850,000
Glamis Gold Corp.Dee North U/G MineDunphy, NV11/01/199912/15/2000Combination LHS and underhand drift & fill3,000315,000120,000
Anglo Gold Corp., USASSX MineElko, NV8/15/200011/01/200070,000′ of sample drilling
Golden Arrow Mining LLCGolden Arrrow MineLewiston, MT06/01/20009/15/20005′ x 7′ Trackless development200
Newmont Mining Corp.Rain MineCarlin, NV9/15/199304/01/1999Portal, 10′ x 12′ Development, combination LHS and underhand D & F12,000500,000300,000
Anglo Gold Corp., USASSX MineElko, NV10/01/19983/15/199950,000′ of sample drilling
Newmont Mining Corp.Carlin MainCarlin, NV5/15/19952/28/1998Portal, 12′ x 12′ Development with combination LHS and underhand D & F5,000200,000120,000
Newmont Mining Corp.Carlin WestCarlin, NV03/01/199612/01/1997Portal, 12′ x 12′ Development plus stope preparations3,000
Newmont Mining Corp.Deep StarCarlin, NV02/01/199409/01/1996Portal, 14′ x 14′ Development drifting with various construction activity10,000
Newmont Mining Corp.Carlin EastCarlin, NV9/15/19939/15/1995Portals, 14′ x 14′ Multiple heading development, test LHS mining with CRF5,000100,00060,000
The HomesteadHeber City, UTHomestead Hotpot4/15/19958/15/1995Portal, 6′ x 8′ Drift into center of hotpot for scuba diving access100
Battle Mountain Gold Corp.Crown Jewel ProjectOroville, WA5/20/19955/30/1995Portal closure with concrete and grouting
Diversified DevelopmentLone JackMt. Baker, WA8/15/199411/01/1994Open stoping on narrow gold vein2,000
Diversified DevelopmentLone JackMt. Baker, WA8/15/199311/15/1993Open stoping on narrow gold vein2,000
Echo Bay Minerals Corp.McCoy MineBattle Mountain, NV04/01/199004/01/1993BCI-2 stope drilling and blasting
Battle Mountain Gold Corp.Fortitude U/GBattle Mountain, NV10/01/199203/01/1993Portals, Three concurrent development areas with various mining methods3,00060,000
Echo Bay Minerals Corp.Kettle River MineCurlew, WA04/01/199012/15/1992BCI-2 stope drilling and blasting
Precious Metals Inc. of TXKlondike ProjectKingston, NV04/01/199211/15/199210′ x 10′ Development with inclined room and pillar slusher mining8002,000
Fischer-Watt Gold Corp.Mystic MineSun City, AZ04/01/199209/01/1992Converted an out of control shrinkage stope to long-hole stoping1,00015,000
Western Utility ContractorsDeer Creek PipelineProvo, UT7/15/19928/15/1992Backfilled 400′ of abandoned 8.5′ diameter pipeline
Alta Gold Corp.Red Ledge PropertyHalfway, OR5/15/19927/15/1992EPA Mine closure with helicopter support in Snake River Wilderness
Cyprus Pinos Altos Corp.Pinos Alto MineSilver City, NM3/15/199205/01/1992Raise cut outs plus raising
South Atlantic VenturesOracle Ridge MineSan Manuel, AZ06/01/19901/15/199214′ x 14′ Development drifting, Room and pillar mining3,000150,000
Hecla Mining Corp.Apex ProjectSt. George, UT03/01/19906/15/19918′ x 10′ Developments plus 4′ x 6′ top cuts and underhand cut & fill1,50025,000
Cedar ResourcesPlatoro ProjectPlatoro, CO04/01/19901/15/1991Exploration drifting3,000
Magma Copper Corp.San Manuel MineSan Manuel, AZ08/01/199011/01/1990Cubex rotary reverse circulation drilling for leach water return
Cyprus Gold Corp.Copperstone MineParker, AZ3/15/198906/01/1989Portal, 7′ x 8′ Exploration into pit wall (First time out of a pit wall)400
Cedar ResourcesPlatoro ProjectPlatoro, CO06/01/198806/01/198914′ x 14′ Development, Exploration drifting, test mining on a Vein4,000
Western Utility ContractorsDeer Creek PipelineProvo, UT04/01/19894/15/1989Backfilled 400′ of abandoned 8.5′ diameter pipeline
Eastmaque Gold Corp.American Girl “B” ZoneWinterhaven, CA03/01/198611/01/198812′ x 13′ Development drifting, Test mining, Various construction8,00020,000
CoCa Mines, Inc.Cactus MineMojave, CA05/01/198708/01/1987Exploration drifting to drill hole intercepts300
Musto Exploration, LTDApex ProjectSt. George, UT1/15/198307/01/1987Development, Ore mining, Various construction3,00025,000
Verdestone MiningVerdestone MineGardnerville, NV08/01/19828/15/1982Claim assessment work
Total736,62721,386,40516,994,817