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Published : June 04th, 2014

Positive Metallurgical Test Results at Bombore

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Positive Metallurgical Test Results at Bombore

OTTAWA, ONTARIO--(Marketwired - Jun 4, 2014) - Orezone Gold Corporation (ORE.TO) is pleased to announce positive metallurgical test results from its ongoing feasibility work at its 100%-owned Bomboré Gold Project in Burkina Faso. The Heap Leach (HL) column test results indicate that overall gold recoveries can be increased from 79% to 87% and potentially eliminate any requirement for cement agglomeration with the addition of an agitated leaching circuit (ALC) to treat 50-65% of the oxide ores. With the addition of an upfront scrubber and screen, a fine fraction (-212 microns) can be easily separated and sent directly to the ALC without grinding to yield gold recoveries of 87-92% depending on the leach residence time. The remaining coarse fraction exhibits excellent compaction and permeability results and would go directly to the HL pad to be stacked to a height of 64 m without agglomeration or interlift liners. Recoveries for the HL coarse fraction are estimated to be 82-88% based on the preliminary test work conducted by Kappes, Cassiday & Associates in Reno, Nevada.

Highlights of the Hybrid Circuit

  • Significantly improved percolation and compaction yielding HL recoveries between 82-88%
  • Preliminary ALC residence tests indicate at least 87% recovery with a short 12 hour leach cycle
  • The agglomerator and interlift liners are removed from the HL circuit
  • Lower HL reagent costs, sustaining capital and reduced labor requirements
  • Low solution to ore ratio for the HL indicating a more rapid leach cycle
  • Maximum HL crush size has increased from 15 mm to 37 mm without reduction in recovery
  • The coarse ore potentially provides excellent overliner material to reduce leach pad costs
  • The ALC circuit will include scrubber/screen, screw classifiers, leach tanks and thickener
  • Reduction in working capital with approximately 50% of the gold recovered sooner in the ALC
  • The ALC will lower production risks by removing the fine soft oxide material from the HL circuit that would otherwise require high cement agglomeration
  • Comprised of two simple circuits that can be designed with extra capacity for expansion

The reduction in cement consumption will offset the cost of the additional power requirement for the ALC. Tailings storage of the fine fraction is envisioned to be in a separate facility for the first two years then nested within the HL pad thereafter. The ongoing test work and design modifications will continue in parallel with the 21,000 m infill drill program. The Company plans to complete a feasibility study (FS) based on the Hybrid design and apply for a mining permit by year-end. An updated resource model and mine plan will follow the FS in Q1 2015.

"This hybrid design combines two simple circuits to reduce risk, improve recoveries and allow for immediate expansion," stated Tim Miller, COO for Orezone. "Our goal is to maintain the robust returns estimated in the recent economic assessment of the project by offsetting any increased capital costs by the significantly improved recoveries and gold output."

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 Bomboré, the largest undeveloped oxide gold deposit in West Africa which is situated 85 km east of the capital city, adjacent to an international highway. 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.

Carl Defilippi of Kappes Cassiday & Associates; and Tim Miller, COO, Pascal Marquis, SVP Exploration and Ron Little, CEO of Orezone, are Qualified Persons under National Instrument 43‐101 and have reviewed the information in this release.

FORWARD‐LOOKING STATEMENTS AND FORWARD‐LOOKING INFORMATION: This news release contains certain "forward‐looking statements" within the meaning of applicable Canadian securities laws. Forward‐looking statements and forward‐looking information are frequently characterized by words such as "plan", "expect", "project", "intend", "believe", "anticipate", "estimate", "potential", "possible" and other similar words, or statements that certain events or conditions "may", "will", "could", or "should" occur. Forward‐looking statements in this release include statements regarding, among others; completing various technical studies for Bomboré in 2014 and their potential impact on the economic returns on the project, completing the FS and applying for a mining permit by year‐end 2014, updating the resource model and mine plan in Q1 2015, and becoming a mid‐tier gold producer.

FORWARD‐LOOKING STATEMENTS are based on certain assumptions, the opinions and estimates of management at the date the statements are made, and are subject to a variety of risks and uncertainties and other factors that could cause actual events or results to differ materially from those projected in the forward‐looking statements. These factors include the inherent risks involved in the exploration and development of mineral properties, the uncertainties involved in interpreting drilling results and other geological and geotechnical data, fluctuating metal prices, the possibility of project cost overruns or unanticipated costs and expenses, the ability of contracted parties (including laboratories and drill companies to provide services as contracted); uncertainties relating to the availability and costs of financing needed in the future and other factors. The Company undertakes no obligation to update forward‐looking statements if circumstances or management's estimates or opinions should change. The reader is cautioned not to place undue reliance on forward‐looking statements. Comparisons between any resource model or estimates with the subsequent drill results are preliminary in nature and should not be relied upon as potential qualified changes to any future resource updates or estimates.

Readers are advised that National Instrument 43‐101 of the Canadian Securities Administrators requires that each category of mineral reserves and mineral resources be reported separately. Readers should refer to the annual information form of Orezone for the year ended December 31, 2013 and other continuous disclosure documents filed by Orezone since January 1, 2014 available at www.sedar.com, for this detailed information, which is subject to the qualifications and notes set forth therein.

Read the rest of the article at finance.yahoo.com
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Orezone Gold is a gold exploration company based in Canada.

Its main exploration properties are ZELINE 1 & ZELINE 4 and KOSSA in Niger and BOMBORE, SEGA and BONDI in Burkina Faso.

Orezone Gold is listed in Canada. Its market capitalisation is 40.3 millions as of today (US$ 29.7 millions, € 26.9 millions).

Its stock quote reached its highest recent level on April 08, 2011 at 5.26, and its lowest recent point on November 27, 2015 at 0.22.

Orezone Gold has 47 442 200 shares outstanding.

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Annual reports of VanEck Vectors Global Alternative Energy ETF
2009 Annual Report
2008 Annual Report
Annual report 2006
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Project news of VanEck Vectors Global Alternative Energy ETF
3/27/2013(Bombore)Positive Progress Report for Bombore Feasibility Study and R...
11/13/2012(Bombore)Positive Drill Results Support Further Growth at Bombore
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2/3/2012(Sega)Sells Sega Project to Cluff Gold for $29.6M
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8/18/2011(Sega)Confirms Heap Leach Potential of Sulphide Resources at Sega
8/8/2011Orezone Expands Bombor\303\251 Gold Project ...
8/8/2011(Bombore)Expands Bombore Gold Project Area 60% With New Permit
7/26/2011(Bombore)Reports Higher Gold Grades and Improved Continuity at Bombor...
6/21/2011(Bombore)Bombor=E9 Gold Project Has PositivePreliminary Economic Asse...
6/20/2011Orezone Bombor\303\251 Gold Project ...
4/11/2011(Sega)Confirms Positive Metallurgical Results for Sega Gold Deposi...
3/24/2011(Bombore)Positive Drill Results at Bombore Continue to Confirm Model
3/23/2011(Bombore)Positive Drill Results at Bombore Continue to Confirm Model
2/24/2011(Zeline 1 & Zeline 4)/Brighton Makes Significant New Uranium Discovery in Niger: ...
7/6/2010(Bombore)Fourth Round of Positive Drill Results at Bombore
6/16/2010(Bombore)Positive Results Continue From Bombore Infill and Expansion ...
5/13/2010Additional PositiveInfill and Expansion Drilling Results at ...
3/25/2010(Bombore)Bombore Auger Drilling Results Indicate Possible 2.5km of Ex...
1/28/2010(Bombore)Commences $2 Million Drill Program at Bombore
1/5/2010(Sega)Increases Sega Project Gold Resources
12/8/2009(Bombore)Improves on Final Bombore Metallurgical Results
10/14/2009(Bombore)Confirms Bombore Gold Deposit is Amenable to Heap Leaching
7/29/2009(Bombore)Completes Drilling Below Surface Resources at Bombore
6/24/2009(Bombore)Orezone Confirms Mineralization at Bombore Below Surface Res...
11/10/2008(Bombore)Almost Triples Gold Resource at Bombore Project
6/30/2008(Essakane)2008 Technical report
Corporate news of VanEck Vectors Global Alternative Energy ETF
12/4/2015Orezone Approved to Move from TSX to TSX-V
9/16/2015Orezone Provides Update on Bomboré Permitting and Bondi Proj...
9/16/2015Orezone Provides Update on Bombore Permitting and Bondi Proj...
7/21/2015Orezone Closes C$6.5M Investment
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1/27/2015Orezone Closes US$3 Million Financing and Secures an Additio...
1/27/2015Sandstorm Gold Announces 10 Royalty Agreements
1/27/2015Orezone Closes US$3Million Financing
11/24/2014Bombore Gold Project Feasibility Study Update
11/10/2014Orezone update on Operations in Burkina Faso
11/10/2014Orezone Update on Operations in Burkina Faso
11/3/2014Orezone update on Bomboré and Burkina Faso
11/3/2014Orezone Update on Bombore and Burkina Faso
10/14/2014Bombore Gold Project Feasibility Study Update
9/8/2014Bombore Gold Project Feasibility Study Update
7/10/2014Positive Metallurgical and Drilling Results at Bombore
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5/23/2014Orezone Gold Corporation: Results of Annual General Meeting
5/21/2014Orezone Appoints Chief Operating Officer
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5/24/2013Results of Annual General Meeting
5/24/2013Results of Annual General Meeting
4/29/2013(Bombore)Increases and Upgrades the Bombore Gold Project Resource
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5/31/2012(Bombore)Bombore Drill Program Continues with Positive Results
5/23/2012(Sega)Completes the Sale of Sega to Cluff Gold for $26.5M
3/30/2012(Bombore)Completes 215,000 Drill Program at Bombore
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9/12/2011(Bombore)Positive Results Continue at Bombore With Seven Drills Opera...
5/26/2011(Bombore)Reports Additional Positive Drill Results at Bombore Gold Pr...
5/16/2011.: Brighton Energy Discovers Additional Uranium Mineralizati...
4/6/2011Expands Board and Management Team
3/7/2011Burkina Faso is Ra
2/17/2010Brighton Energy Limited Receives Niger Uranium Permit Approv...
7/8/2009Ron Little named Ernst & Young Entrepreneur of the Year Fina...
2/25/2009IAMGOLD Completes Acquisition of Orezone
2/20/2009Obtains Final Court Approval for IAMGOLD Transaction
2/19/2009Shareholders Approve Arrangement with IAMGOLD
2/13/2009 Updates Status of Shareholder Vote
9/29/2005An emerging producer in Burkina Faso, West Africa
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