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| | Corporate Profile: Goldrock Mines Corp
Publisher: Kaiser Research Online
Author: Copyright 2009 John A Kaiser
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Goldrock Mines Corp (GRM-V)
| Goldrock changed its name from Mansfield Minerals Ltd in January 2013. The company is the Latin American exploration vehicle for John and Gordon Leask who specialize in generating prospects from scratch. The focus since the mid nineties has been Argentina, where the flagship is the 100% owned Lindero gold project where a nearly two million ounce gold resource has been identified. The secondary focus is the Rio Grande IOCG project currently under option to Antares. In November 2008 Mansfield spunout its exploration portfolio into a new company, Pachamama Resources, in order to focus solely on the development or potential sale of 3 million ounce Lindero gold deposit. A feasibilty study for a potential open-pit operation at Lindero is expected during Q1 2013. |
Key to Understanding IPV Charts and Spec Value Hunter Tables
| An IPV Chart is a graphical presentation of a Spec Value Hunter table that has been constructed according to the Rational Speculation Model developed by John Kaiser. The IPV Chart allows speculators to identify which projects offer poor, fair or good speculative value in both absolute and relative terms. The speculative value depends on the project stage, the project's implied value as calculated by the company's fully diluted capitalization, stock price and net project interest, and the dream target deemed appropriate for the project. A dream target is what a project would be worth in discounted cash flow terms once in production. |
| Green background indicates the dream target judged appropriate for this play by John Kaiser - otherwise unranked. |
Poor Speculative Value -   |
Fair Speculative Value -  |
Good Speculative Value -   |
| Note: narrow arrows indicate IPV is outside the fair value channel but within 25% of the fair value limits |
| Click on the company name to view the company profile, the project name to view project details. |
| Click on the project icon if its background is shaded to get the IPV Chart for that company. |
| Lindero |  | 100% WI | Argentina | 7-Permitting & Feasibility |
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| Lindero 43-101 Economic Study (USD except where noted otherwise) |
| FS | May 31, 2013 |
| Kappes Cassiday | Lindero |
| Mining Scenario | TR | Mining Costs |
| Mining Type: | OP |
| Cost Currency: | USD |
| Processing Type: |
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| Capital Cost: | $170,900,000 |
| Operating Rate: | 18,750 tpd |
| Sustaining Cost: | $64,100,000 |
| Operating Days: | 365 |
| Operating Cost: | $10.07/t |
| Strip Rate: | 1.8 |
| BC Cash Cost per Unit: USD | $632/oz Au |
| Mine Life: | 10 years |
| BC Cash Cost Net By-Products: USD | $632/oz Au |
| LOM Tonnage: | 65,546,000 t |
| BC All-In Cost Net By-Prod: USD | $859/oz Au |
| Est Startup: |
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| Spot All-In Cost Net By-Prod: USD | $859/oz Au |
| Production Potential |
| Metal 1 | Metal 2 | Metal 3 | Metal 4 |
| Metal: | Au |
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| Grade: | 0.72 g/t |
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| Recovery: | 68.3% |
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| Annual Output: | 109,000 oz |
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| LOM Output: | 1,037,000 oz |
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| Base Case Price: | $1,400/oz |
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| Spot Price: | $1,315/oz |
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| Base Case NSR: | $22.30/t |
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| Spot NSR: | $20.94/t |
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| Base Case Valuation |
| Reported Valuation Currency: | USD |
| Pre-Tax NPV: | $313,473,000 |
| Discount Rate: | 5% |
| After-Tax NPV: | $215,044,000 |
| Total Base Case NSR USD: | $22.30/t |
| Pre-Tax IRR: | 41% |
| Total Spot NSR USD: | $20.94/t |
| After-Tax IRR: | 33% |
| Annual Pre-Tax Cash Flow Base Case and Net CF/FDSH USD: | $83,683,438 | $0.64 | Pre-Tax Payback: |
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| Annual Pre-Tax Cash Flow Spot and Net CF/FDSH USD: | $74,423,888 | $0.57 | After-Tax Payback: | 2.0 y |
| Enterprise Value CAD : | $175,491,939 | $1.46/sh | Share Price: | $1.48 |
| Note: |
| Comparative Valuations using Life of Mine Averages |
| Discount Rate: | 0% | 5% | 10% | 15% |
| Base Case Pre-Tax NPV USD: | $601,834,375 | $405,509,525 | $276,283,475 | $188,623,916 |
| Base Case Pre-Tax Net NPV/Sh USD: | $5.00 | $3.37 | $2.30 | $1.57 |
| Premium BC PT NPV over EV: | $3.87 | $2.24 | $1.16 | $0.43 |
| Spot Pre-Tax NPV USD: | $509,238,875 | $337,414,486 | $224,559,905 | $148,213,882 |
| Spot Pre-Tax Net NPV/Sh: | $4.23 | $2.81 | $1.87 | $1.23 |
| Premium Spot PT NPV over EV USD: | $3.10 | $1.67 | $0.73 | $0.10 |
| The comparative NPV calculations assume constant annual cash flow based on the life of mine average annual payable production and CapEx spent in year one. The operating cost includes the LOM sustaining capital. Due to details such as ore scheduling these NPV figures may differ from those of the 43-101 economic study. |
| After-Tax Valuations using Spot By-Product Prices |
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| Lindero 43-101 Economic Study (USD except where noted otherwise) |
| PFS | Mar 2, 2010 |
| AMEC Americas | Lindero |
| Mining Scenario | TR | Mining Costs |
| Mining Type: | OP |
| Cost Currency: | USD |
| Processing Type: | HL |
| Capital Cost: | $213,000,000 |
| Operating Rate: | 30,000 tpd |
| Sustaining Cost: | $15,000,000 |
| Operating Days: | 365 |
| Operating Cost: | $4.20/t |
| Strip Rate: | 0.9 |
| BC Cash Cost per Unit: USD | $371/oz Au |
| Mine Life: | 10 years |
| BC Cash Cost Net By-Products: USD | $371/oz Au |
| LOM Tonnage: | 101,000,000 t |
| BC All-In Cost Net By-Prod: USD | $539/oz Au |
| Est Startup: |
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| Spot All-In Cost Net By-Prod: USD | $539/oz Au |
| Production Potential |
| Metal 1 | Metal 2 | Metal 3 | Metal 4 |
| Metal: | Au |
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| Grade: | 0.59 g/t |
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| Recovery: | 70.3% |
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| Annual Output: | 124,000 oz |
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| LOM Output: | 1,357,000 oz |
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| Base Case Price: | $850/oz |
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| Spot Price: | $1,315/oz |
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| Base Case NSR: | $9.63/t |
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| Spot NSR: | $14.89/t |
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| Base Case Valuation |
| Reported Valuation Currency: | USD |
| Pre-Tax NPV: | $194,000,000 |
| Discount Rate: | 6% |
| After-Tax NPV: |
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| Total Base Case NSR USD: | $9.63/t |
| Pre-Tax IRR: | 26% |
| Total Spot NSR USD: | $14.89/t |
| After-Tax IRR: |
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| Annual Pre-Tax Cash Flow Base Case and Net CF/FDSH USD: | $59,410,000 | $0.48 | Pre-Tax Payback: | 2.8 y |
| Annual Pre-Tax Cash Flow Spot and Net CF/FDSH USD: | $117,076,200 | $0.96 | After-Tax Payback: |
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| Enterprise Value CAD : | $175,491,939 | $1.46/sh | Share Price: | $1.48 |
| Note: |
| Comparative Valuations using Life of Mine Averages |
| Discount Rate: | 0% | 5% | 10% | 15% |
| Base Case Pre-Tax NPV USD: | $366,100,000 | $223,014,924 | $129,847,165 | $67,510,340 |
| Base Case Pre-Tax Net NPV/Sh USD: | $3.04 | $1.85 | $1.08 | $0.56 |
| Premium BC PT NPV over EV: | $1.91 | $0.72 | ($0.05) | ($0.57) |
| Spot Pre-Tax NPV USD: | $942,762,000 | $647,094,077 | $451,968,833 | $319,174,093 |
| Spot Pre-Tax Net NPV/Sh: | $7.84 | $5.38 | $3.76 | $2.65 |
| Premium Spot PT NPV over EV USD: | $6.70 | $4.25 | $2.62 | $1.52 |
| The comparative NPV calculations assume constant annual cash flow based on the life of mine average annual payable production and CapEx spent in year one. The operating cost includes the LOM sustaining capital. Due to details such as ore scheduling these NPV figures may differ from those of the 43-101 economic study. |
| After-Tax Valuations using Spot By-Product Prices |
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