Presentation toProactive Investors One2One Investor Forum

17 May 2012

• This presentation does not constitute a recommendation to buy or sell securities of ECRMinerals plc (“ECR” or the “Company”) or any other securities mentioned herein. Thispresentation does not constitute a prospectus or an admission document relating to ECR, nordoes it constitute or form part of any offer or invitation to purchase, sell or subscribe for anysecurities in ECR, nor shall this presentation or any part of it, or the fact of its distribution,form the basis of or be relied on in connection with any contract therefor.

• No reliance should be placed on the information contained in this presentation or on itscompleteness. No representation or warranty, express or implied, is given by or on behalf ofECR or any directors, partners, officers, employees, advisers or any other persons as to theaccuracy, fairness or sufficiency of the information or opinions contained in this presentation.Save in the case of fraud, no liability is accepted for any errors, omissions or inaccuracies insuch information or opinions.

• This presentation may contain forward-looking statements relating to future events or to theanticipated performance of ECR. By their very nature forward-looking statements involveknown and unknown risks, uncertainties and other factors which may cause the actualperformance of the Company to be materially different from any anticipated performanceexpressed or implied by the forward-looking statements.

ECR MINERALS PLC

DISCLAIMER

2

ECR MINERALS PLC

ABOUT ECR MINERALS

• ECR is a mineral development company with interests in a range of projects andan operational focus on gold in Argentina

• 100% ownership of Sierra de las Minas gold project area in La Rioja Province,Argentina. Initial drilling programme completed May 2012 with encouragingresults so far

• 21% fully diluted stake in THEMAC Resources Group (TSX-V: MAC), which isfocused on the Copper Flat copper-molybdenum-gold-silver porphyry project inNew Mexico, USA. ECR’s stake was valued at £10.6M at last balance sheet date

• 26% shareholding in Paniai Gold, a private Australian company with a substantialinterest in West Wits Mining (ASX: WWI). West Wits is focused on the DerewoRiver gold project in Papua, Indonesia. ECR also holds shares in West Wits directly

• 70% interest in ACS Asia, a Thai metal products manufacturing business

3

Keith Irons, Non-Executive Chairman• More than 40 years’ experience in the mining and energy industries including 17 years as

Chairman of Bankside Consultants Ltd, an independent financial public relations and investorrelations consultancy, having founded Bankside in 1991

• Previously held senior corporate roles with the Anglo American group, Blue Circle Industries, RioTinto, Amax/Roan Selection Trust and in several junior companies

Patrick Harford, Managing Director• Operated:

– 10Mt gold tailings retreatment operation in Western Australia producing 750,000 oz gold– Zapopan NL producing 120,000 oz gold per annum and participating in discovery and

development of 6 Moz Mt Todd gold mine in Australia’s Northern Territory• Developed 2Mtpa River Ranch diamond mine in Zimbabwe which produced 500,000 carats per

annum

Stephen Clayson, Director and Chief Financial Officer• Diverse background in the mineral sector, including corporate development roles for listed mining

and exploration companies active in South East and Central Asia

Paul Johnson, Non-Executive Director• Chartered Accountant with more than 20 years’ investing experience. Co-founder of

MiningMaven, an investor communications service focused on the natural resources sector

BOARD OF DIRECTORS

ECR MINERALS PLC 4

THEMAC RESOURCES GROUP (TSX-V: MAC) -DEVELOPMENT VEHICLE FOR COPPER FLAT PROJECT

ECR MINERALS PLC

• THEMAC has 100% ownership of the Copper Flat project, a former producing mine withmajor civil infrastructure still in place located 150 miles south of Albuquerque, the largest cityin New Mexico

• Copper Flat is a copper-molybdenum-gold-silver porphyry with a higher grade breccia core

• THEMAC proposes to return the Copper Flat mine to production, subject to successfulnegotiation of the necessary feasibility, financing and permitting stages

• NI43-101 compliant preliminary economic assessment (PEA) completed; prefeasibility studyand permitting underway

• 2011 drilling campaign completed successfully and 2012 campaign commenced

• Highly encouraging assay results announced from 2011 drilling, including numerous highgrade intersections at shallow depth

5

ECR MINERALS PLC

COPPER FLAT PROJECT, NEW MEXICO, USA

6

NI43-101 resources 194Mst measured & indicated(cut-off grade 0.26% Cu, 0.008% MoUS$7.25 NSR/st) 0.002 oz/t Au, 0.05 oz/t Ag

Contained metal 1,005,891,000 lbs Cu30,473,000 lbs Mo430,000 oz Au9,001,000 oz Ag

2011 drilling results Highest grade intersection2.34% Cu over 5ftOther intersections include0.695% Cu over 309.7ft

Civil infrastructure Tailings dam, largely pre-in place stripped open pit, power

lines, water well field andpipeline, access roads,diversion channels, buildingfoundations

Above: Copper Flat mine in 1982

ECR MINERALS PLC

• ECR acquired an option over the Copper Flat project in August 2009 for US$150,000 and completedthe sale of the option to THEMAC for shares and warrants in March 2011

• Approximately £1.5M was spent by ECR to achieve the sale of the option, which has now been fullyexercised by THEMAC

• Present ECR interest:– 14.35M shares and 14.35M warrants– Shareholding equivalent to 19% interest undiluted– 14.35M shares valued at C$9M (£6M) based on C$0.65 per share (approximate level of recent

trading)

• After exercise of warrants, assuming no prior disposals:– 28.7M shares– Shareholding equivalent to 21% interest fully diluted– 28.7M shares valued at C$18M (£12M) based on C$0.65 per share

• All THEMAC warrants held by ECR are exercisable at C$0.28 per share; 3.85M are valid until 3 May2013 and the remaining 10.5M are valid until 4 March 2016

ECR’S INTEREST IN THEMAC

7

ECR MINERALS PLC 8

Kevin Maloney, ChairmanFounder of The MAC Services Group, anAustralian mining services company taken overin 2011 for US$600M cashJohn Cook, DirectorExtensive financial experience, particularly inraising natural resources equity financeJoel Schneyer, Independent DirectorManaging Director of Headwaters MB, aninvestment bank focused on the mining sectorKen Pickering, Independent DirectorFormer Vice President of Major Projects, ClosedMines and North American Assets for BHPBilliton Base Metals

Andre Douchane, Chief Executive OfficerFormer President & CEO of North AmericanPalladium and VP Operations for Franco-Nevada. More than 40 years of experienceAnn Carpenter, Project DirectorFormer President & COO of US GoldCorporationMike Anglin, Executive AdviserHas held numerous senior roles with BHPBillitonEd Fidler, Feasibility Study ManagerRecently Mine Manager at FreeportMcMoRan’s Safford mine in Arizona, USA

THEMAC Board of Directors Copper Flat Project Management

THEMAC RESOURCES MANAGEMENT TEAM

• Despite increasing attention from the globalmining industry, Argentina remains relativelyunexplored

• ECR is focused on the Sierra de las Minasgold project area in La Rioja Province in thenorthern central part of the country

• The project area encompasses numeroushistoric small scale gold mining areas

• Exploration targets identified within theproject area may offer scope for definition ofhigh grade, smaller tonnage gold depositssuitable for early development to production

• Key prospects include the El Abra historicmine, which comprises three exploitationconcessions covering 18 hectares

ECR MINERALS PLC

GOLD EXPLORATION IN ARGENTINA -SIERRA DE LAS MINAS PROJECT AREA

Above: Terrain of the Sierra de las Minas project area

showing town of Ulapes

9

• ECR holds 100% exploration rights to theSierra de las Minas project area and 100%exploitation rights to a number of prospectswithin it, including the El Abra prospect

• Primary style of mineralisation at Sierra de lasMinas is mesothermal lode style gold

Sierra de las Minas gold project area

ARGENTINA - ORIENTATION

ECR MINERALS PLC

• Q1 2011 surface geochemical sampling at El Abra prospect confirmed thepresence of high grade gold mineralisation hosted within and inassociation with approximately 900m of outcropping gold-bearingquartz veins

• High grades including 80.78, 44.98 and 39.74 g/t Au returned (best resultsof programme in table to right)

• The El Abra vein margins are also significantly gold-bearing. Individualveins are exposed over lengths of up to around 100m and exposedwidths vary from <1m to 4m

• In addition to El Abra, numerous other historic prospects have beensubjected to first pass geochemical sampling in order to prioritise themfor further work. Five more priority prospects have been identified

• ECR has sampled approximately 2km of vein length at Sierra de lasMinas so far, including the El Abra veins. Mineralised widths at surfaceat numerous prospects aside from El Abra frequently exceed 1m andhigh grade gold values (>5g/t) are widespread

SIERRA DE LAS MINAS PROJECT AREA & EL ABRA PROSPECT

11

SAMPLE IDGRADE(g/t Au)

HIGHEST ASSAY

EA001EA004EA008EA014EA015EA021EA023EA024EA029EA030EA033EA037EA040EA042EA045EA048EA070EA075EA077EA079EA083EA086EA087EA088EA089

1.276.915.243.2

1.291.976.5110.41.043.18

39.747.34

20.7080.78

7.012.6

37.118.5

1.047.377.44

44.983.02

32.019.59

A

B A to B = 60km

NEl Abra

80.78 g/t AuEl Abra

SIERRA DE LAS MINAS PROJECT

AREA

Left: Satellite view showing ECR priority prospects

with highest grade surface samples

Don Chiche4.26 g/t Au

Casas Viejas32.5 g/t Au

Mina Azul15.3g/t Au

Mina San Antonio14.6 g/t Au

Cuerpo SI54 g/t Au

Maestro Aguero

21.9 g/t Au

Right:Simplified geological map showing selected

known gold occurrences

NB:Actual extent of

tenements not shown

• Initial drilling programme completed at El Abra goldprospect in May 2012; partial results overleaf

• 13 drill holes completed totalling approximately 1,000m

• Surficial samples from El Abra and other prospects haveundergone initial metallurgical testwork with highly positiveresults; gold recoveries of 86-99% were achieved usingconventional methods (gravity concentration and cyanideleach)

• ECR is working to establish the viability of processing highgrade ore from El Abra and other prospects at Sierra de lasMinas either by toll treatment or in a dedicated processingplant

• Discussions initiated with potential partner for processing ofhigh grade material, which would allow commencement ofgold production with relatively limited initial capital

ECR MINERALS PLC 13

SIERRA DE LAS MINAS STRATEGY

Above:Historic mine workings

at El Abra

Hole number Interval (m)

Grade (Au g/t)

From (m)

To (m)

Total depth (m)

Declination(degrees)

1 0.85 0.25 81.05 81.9 94.5 45

2 (1st intersection) 0.5 4.8 96.0 95.5 116.5 55

2 (2nd intersection) 3.0 21.5 99.0 102.0

including 1.0 50.0

3 3.0 1.3 50.0 53.0 76.6 45

4 n/a n/a n/a n/a 101.0 55

5 0.64 1.7 44.0 44.64 65.0 45

6 0.5 3.75 45.2 45.7 104.3 55

7 No significant results 67.1 65

8 No significant results 65.0 45

• Assay results in respect of 7 of 13 drill holes shown in table below

• Extension of high grade gold mineralisation to depth confirmed

• Best intersection so far 3.0m in hole 2 grading 21.5 g/t gold including 1.0m at 50 g/t gold

PARTIAL RESULTS OF FIRST DIAMOND DRILLING PROGRAMME AT EL ABRA GOLD PROSPECT COMPLETED MAY 2012

DRILL RIG IN OPERATION AT EL ABRA GOLD PROSPECT, APRIL 2012

• Paniai is a private Australian company founded as a vehiclefor the Derewo River gold project in Papua, Indonesia

• ECR holds 100M Paniai shares (26% of issued), making ECRPaniai’s largest shareholder

• In July 2011 Paniai sold its interest in the Derewo Riverproject to West Wits Mining Ltd (ASX: WWI) for a packageof ordinary shares, performance shares and options

• The West Wits ordinary shares received were distributed toPaniai shareholders. Paniai retains the performance sharesand options

• ECR received approximately 11.1M West Wits ordinaryshares, which are trading at A$0.02-3 per share

• ECR has identified strategies to increase its exposure toDerewo River should the project be successful

ECR MINERALS PLC

PANIAI GOLD & WEST WITS MINING -DEREWO RIVER GOLD PROJECT

Above and below: Alluvial gold recovered from the Derewo River project area

16

• >100,000oz gold has been extracted at Derewo River inrecent years by local miners using only primitivetechniques

• Objectives of the Derewo River project are to establish amore sophisticated alluvial gold mining operation andto explore for new alluvial and hardrock deposits

• Project is a JV with local partner. The West Wits interestis 50% in initial alluvial operation and up to 80% inexploration

• Initial alluvial mining area covers 40 hectares andexploration area exceeds 128,000 hectares. Explorationtargets include large scale alluvial gold, porphyry gold-copper and bonanza grade quartz sulphide gold veins

ECR MINERALS PLC

Above and below:Alluvial gold mining at Porgera

in Papua New Guinea in the 1960s

17

DEREWO RIVER GOLD PROJECT

ECR MINERALS PLC

ELEPHANT COUNTRY

18

ECR MINERALS PLC

DEREWO RIVER EXPLORATION AREA

19

DEREWO RIVERPROJECT AREA

ECR MINERALS PLC

SUMMARY

• AIM listed mineral development company with gold focus

• First drilling programme at El Abra gold prospect completed in May 2012 withpromising results so far and further results still to be reported

• Working to confirm validity of high grade, low tonnage gold production strategy atSierra de las Minas

• THEMAC holding offers exposure to Copper Flat project and scope to monetiseECR’s stake as desired and as circumstances permit

Share Data

– Number of shares in issue 727.4M, £4M undiluted mkt. cap. at 0.55p per share

– Traded as AIM: ECR and ADRs as OTC: MTGDY

22