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Orezone Announces Positive Preliminary Economic Assessment

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Orezone Announces Positive Preliminary Economic Assessment

 

 

 

 

 

 

Orezone Gold Corporation (TSX:ORE) is pleased to announce the results of an independent Preliminary Economic Assessment for its wholly owned Bombore Gold Project in Burkina Faso, West Africa. The Base Case financial model yields a robust after tax IRR of 23.9 % to Orezone with a mine plan optimized to deliver better grade in early years, revenues using a $1250 gold price and current costs based on operations in the region. The after tax IRR improves to 37.1 % from revenues at a $1,500 gold price, based on the same mine plan. Orezone expects to complete detailed heap leach (“HL”) metallurgical and geotechnical studies in June, update the social and environmental assessments by September and be in a position to complete a full feasibility study and apply for a mining permit before year end.

 

 

“The results of the Study are quite compelling and the project benefits from size, location, low reagent consumption, rapid leaching kinetics, low capital requirements and low all-in operating costs,” said Ron Little, CEO of Orezone. “Bombore is one of the largest and most advanced undeveloped deposits in the region that is truly multi-phase. Commencing with a HL operation positions the Company to move and grow rapidly with a carbon-in-leach (“CIL”) expansion if warranted under better capital market and gold price conditions.”

 

 

The Study was completed by G Mining Services Inc. of Montreal, Canada and included Kappes, Cassiday and Associates, and Golder and Associates of Reno, Nevada. The NI 43-101 compliant Study was based on the resource estimate prepared by SRK Consulting of Toronto, which includes 139.9 Mt of M&I resources grading 1.01 g/t for 4.6 Moz plus 18.4 Mt Inferred resources grading 1.22 g/t for 0.7 Moz. The HL mineable resource is limited to only the measured and indicated near-surface saprolite and transition resources (average depth of 45 m) which includes 44.7 Mt grading 0.88 g/t for 1.3 Moz. The sulphide resources, although extensive, indicate relatively poor heap leach gold recoveries and can be processed later under a CIL expansion scenario. G Mining did not audit the SRK NI 43-101 resource.

 

 

Summary of Base Case Financials:

 

 

The Base Case assumptions include revenues using a gold price of $1,250 and current prices for fuel, reagents, labor, mining and other current costs from operations in the region as of Q32013. The financial highlights are as follows:

 



----------------------------------------------------------------------------
Base Case Financials
Description                                                       Heap Leach
----------------------------------------------------------------------------
Mineral Resource used in Mine Plan (ounces)                        1,271,567
----------------------------------------------------------------------------
Average Grade (g/t)                                                     0.88
----------------------------------------------------------------------------
Processing Throughput (Mt/yr)                                            5.5
----------------------------------------------------------------------------
Mine Life (years)                                                        8.1
----------------------------------------------------------------------------
Average Annual Production (ounces)                                   123,000
----------------------------------------------------------------------------
Gold Production (ounces recovered)                                 1,008,000
----------------------------------------------------------------------------
Waste to Ore Strip Ratio                                                1.63
----------------------------------------------------------------------------
Gross Revenue ($M)                                                  $1,256.2
----------------------------------------------------------------------------
Direct Cash Cost ($/oz)                                                 $627
----------------------------------------------------------------------------
Operating Cost ($/oz)                                                   $677
----------------------------------------------------------------------------
Initial Capital ($M)                                                  $180.0
----------------------------------------------------------------------------
Sustaining Capital ($M)                                                $53.8
----------------------------------------------------------------------------
Closure Costs ($M)                                                     $10.0
----------------------------------------------------------------------------
Orezone (1)
----------------------------------------------------------------------------
NPV after tax (0%) ($M)                                               $246.6
----------------------------------------------------------------------------
NPV after tax (5%) ($M)                                               $158.9
----------------------------------------------------------------------------
IRR after tax                                                          23.9%
----------------------------------------------------------------------------
Government (2)
----------------------------------------------------------------------------
NPV (0%) with taxes ($M)                                              $135.5
----------------------------------------------------------------------------
NPV (5%) with taxes ($M)                                              $102.3
----------------------------------------------------------------------------
(1) Represents Orezone's Burkina Faso subsidiary cash flows net of royalties
and local taxes. The Government of Burkina Faso benefits from its 10% free-
carried shareholding, the gold royalty, corporate tax and withholding taxes.
(2) Government cash flows are underestimated as customs fees and duties on
imports and indirect taxes built into the delivered fuel price have not been
incorporated. All figures in USD.Exchange Rates: XOF : USD = 485
----------------------------------------------------------------------------

 

 

This Study constitutes a Preliminary Economic Assessment for NI 43-101 purposes, is considered preliminary in nature but does not use inferred resources. Mineral resources that are not mineral reserves have not demonstrated economic viability.

 

 

Mineral Resources used in the Mine Plan

 

 

Final pits were designed to account for access ramps and compatible pit slopes, which then produced the following total diluted mineral resource to be used in the mine plan:

 



----------------------------------------------------------------------------
                       Measured Mineral Resource  Indicated Mineral Resource
                      ------------------------------------------------------
               Cut-off   Tonnes  Grade  Contained   Tonnes  Grade  Contained
Category           g/t       Mt    g/t     Ounces       Mt    g/t     Ounces
----------------------------------------------------------------------------
North:
Laterite/Oxide    0.33    12.70   0.89    365,500     8.35   0.83    222,500
Transitional      0.32     5.37   0.91    157,500     1.08   1.11     38,000
Sub-total                 18.08   0.90    523,000     9.43   0.86    260,500
----------------------------------------------------------------------------
South:
Laterite/Oxide    0.32     8.33   0.85    227,000     2.81   0.87     78,000
Transitional      0.31     4.30   0.87    120,500     0.70   1.07     24,000
Sub-total                 12.63   0.86    347,500     3.51   0.91    102,500
----------------------------------------------------------------------------
Southeast:
Laterite/Oxide    0.34     0.27   1.14     10,000     0.40   0.94     12,000
Transitional      0.33     0.20   1.47      9,500     0.21   0.99      6,500
Sub-total                  0.47   1.28     19,500     0.61   0.96     18,500
----------------------------------------------------------------------------
Combined:
Laterite/Oxide    0.33    21.30   0.88    602,500    11.56   0.84    313,000
Transitional      0.32     9.87   0.91    287,500     1.98   1.08     69,000
----------------------------------------------------------------------------
Total                     31.17   0.89    890,000    13.54   0.88    381,500
----------------------------------------------------------------------------

-------------------------------------------------


Measured + Indicated
                      ---------------------------
               Cut-off   Tonnes  Grade  Contained
Category           g/t       Mt    g/t     Ounces
-------------------------------------------------
North:
Laterite/Oxide    0.33    21.06   0.87    588,000
Transitional      0.32     6.45   0.94    195,500
Sub-total                 27.50   0.89    783,500
-------------------------------------------------
South:
Laterite/Oxide    0.32    11.13   0.85    305,500
Transitional      0.31     5.01   0.90    144,500
Sub-total                 16.14   0.87    450,100
-------------------------------------------------
Southeast:
Laterite/Oxide    0.34     0.67   1.02     22,000
Transitional      0.33     0.40   1.23     16,000
Sub-total                  1.08   1.10     38,000
-------------------------------------------------
Combined:
Laterite/Oxide    0.33    32.86   0.87    915,000
Transitional      0.32    11.86   0.93    356,500
-------------------------------------------------
Total                     44.71   0.88  1,271,500
-------------------------------------------------
Note: Some categories may not balance due to rounding

 

 

Estimated Annual Gold Production for Base Case

 

 

The HL scenario assumes an average mining rate of 15 M tonnes per year and a rate of ore placement on the leach pad of 5.5 M tonnes per year. Gold production and operating costs for each year are summarized as follows:

 



----------------------------------------------------------------------------
                Year   -1    1    2    3    4    5    6    7    8    9 Total
----------------------------------------------------------------------------
Gold Prod'n (koz)       3  125  128  131  120  121  123  119  119   19 1,008
----------------------------------------------------------------------------
Head Grade (g/t)     0.83 0.94 0.91 0.93 0.85 0.87 0.88 0.85 0.85 0.83  0.88
----------------------------------------------------------------------------



Summary of Operating Costs
----------------------------------------------------------------------------
                                           Heap Leach
----------------------------------------------------------------------------
                           Total Costs          Avg. Cost          Avg. Cost
Category                            $M         $/t milled               $/oz
----------------------------------------------------------------------------
Mining                           276.6               6.25                275
----------------------------------------------------------------------------
Processing                       246.3               5.57                245
----------------------------------------------------------------------------
General Services                 101.8               2.30                101
----------------------------------------------------------------------------
Transport &
 Refining                          2.5               0.06                  3
----------------------------------------------------------------------------
CSR                                3.1               0.07                  3
----------------------------------------------------------------------------
Total (C1 Costs)              $630.3 M          $14.25 /t           $627 /oz
----------------------------------------------------------------------------
Royalties                        $50.3              $1.14                $50
----------------------------------------------------------------------------
Total (C2 Costs)              $680.6 M          $15.39 /t           $677 /oz
----------------------------------------------------------------------------

 

 

Initial Project Capital Cost Estimates

 

 

Initial capital costs were estimated on the basis of Q42013 quotes on equipment and databases for similar projects in West Africa and South America adjusted for inflation.

 



----------------------------------------------------------------------------
Project Capital Area                                                    US$M
----------------------------------------------------------------------------
Infrastructure                                                          11.1
----------------------------------------------------------------------------
Power                                                                    5.4
----------------------------------------------------------------------------
Water                                                                    4.5
----------------------------------------------------------------------------
Mining and Support Equipment                                            32.3
----------------------------------------------------------------------------
Process Plant                                                           39.6
----------------------------------------------------------------------------
Indirects                                                               17.3
----------------------------------------------------------------------------
Resettlement                                                             5.6
----------------------------------------------------------------------------
General Services                                                        29.4
----------------------------------------------------------------------------
Pre-production                                                          12.8
----------------------------------------------------------------------------
Contingencies                                                           22.0
----------------------------------------------------------------------------
Total Capital Costs ($M)                                            $180.0 M
----------------------------------------------------------------------------

 

 

Total Capital includes a total contingency of $22M based on rates that varied per item.

 

 

Sustaining Capital Cost Estimates

 

 

Sustaining capital costs were estimated on the basis of Q42013 quotes on equipment and databases for similar projects in West Africa and South America adjusted for inflation. Taxes and freight are included along with contingencies that are varied per item (20% on leach pads).

 



----------------------------------------------------------------------------
Project Sustaining Capital Area                                         US$M
----------------------------------------------------------------------------
Mining and G&A                                                           8.6
----------------------------------------------------------------------------
Plant                                                                    0.9
----------------------------------------------------------------------------
Leach Pads                                                              31.2
----------------------------------------------------------------------------
Resettlement                                                             5.5
----------------------------------------------------------------------------
Contingencies                                                            7.5
----------------------------------------------------------------------------
Total                                                                $53.8 M
----------------------------------------------------------------------------

 

 

Project Sensitivities

 

 

The project is sensitive to gold price, and to a lesser extent the fuel price, as demonstrated in the following table:

 



----------------------------------------------------------------------------
Gold Price (per oz)                    $1000   $1100   $1250   $1400   $1500
----------------------------------------------------------------------------
To Orezone
----------------------------------------------------------------------------
NPV (0%) After tax ($M)                 85.3   151.2   246.6   344.3   399.8
----------------------------------------------------------------------------
NPV (5%) After tax ($M)                 27.1    82.1   158.9   236.5   280.4
----------------------------------------------------------------------------
IRR After tax                           8.2%   14.9%   23.9%   32.4%   37.1%
----------------------------------------------------------------------------

----------------------------------------------------------------------------
To Gov't Burkina Faso
----------------------------------------------------------------------------
NPV (0%) After tax ($M)                 46.2    80.6   135.5   188.2   232.9
----------------------------------------------------------------------------
NPV (5%) After tax ($M)                 36.4    60.4   102.3   143.2   178.3
----------------------------------------------------------------------------

----------------------------------------------------------------------------

 

 

Full details of the Preliminary Economic Assessment in the form of a NI 43-101 technical report will be filed on SEDAR within the next 45 days.

 

 

Development Timetable

 

 

Orezone has completed over 400,000 metres of drilling and much of the full feasibility level technical studies required for a CIL and HL operation. In order to finalize a HL full feasibility study by year end additional metallurgical tests are required including but not limited to column and compaction tests. Some geotechnical follow-up on the new HL pad site location is also required. This work is expected to be completed in Q2 2014. Social and environmental studies will continue in parallel in order to prepare an application for a mining permit based on the latest project footprint and design.

 

 

About Orezone Gold Corporation

 

 

Orezone is a Canadian company with a gold discovery track record of +12 Moz and recent mine development experience in Burkina Faso, West Africa. The Company owns a 100% interest in Bombore which is situated 85 km east of the capital city, adjacent to an international highway. Mineral resources are constrained within CIL optimized open pit shells that span 11 km, and include 4.6 Moz of measured and indicated (140 Mt @ 1.01 g/t) and 0.7 Moz of inferred resources (18 Mt @ 1.22 g/t) with an average depth of drilling to only 120 meters. The Company is continuing with various technical studies in order to be in a position to complete a full feasibility study and an application for a mining permit before year end.

 

Posted January 22, 2014

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