Oct 16 2014
Orezone Gold Corporation is pleased to announce that Joseph F. Conway has joined its board of directors. Mr. Conway is currently the CEO and a director of Primero Mining and has nearly 30 years of mining and financial industry experience. Previously, he was the President and CEO of IAMGOLD, a corporation that grew from a $50 million joint venture company into a $6 billion leading intermediate gold producer with significant operations in Africa.
The growth of IAMGOLD included amongst others, a merger with Repadre Capital where Mr. Conway was a founder and CEO from 1995 to 2003, a merger with Cambior in 2006, and the take-over of Orezone Resources in 2008. Mr. Conway has a degree and background in geology along with an MBA. Earlier in his career he spent time as a mining analyst and investment banker as Vice President and Director with Nesbitt Burns, now BMO.
The Company is also pleased to provide the following update on the feasibility study work at its 100% owned Bomboré Gold Project in Burkina Faso.
Metallurgical Testing
Kappes Cassiday & Associates (KCA) in Reno, Nevada has provided the company with highlights from the ongoing scrubbing and leaching tests performed on 2.2 tonnes of representative oxide and semi oxidized material. The testwork is designed to emulate the modified flow sheet that combines heap leaching with agitated leach tanks (CIL) and is expected to confirm or improve upon the leaching properties of the Bomboré oxide ores. Preliminary test work results indicate recoveries from the combined scrubbing and CIL processes are in line with previous tests, as indicated below.
Final scrubber test results on representative composite samples indicate that just over 50% of the oxide material (-0.212 mm) will be processed through a simple CIL circuit without grinding with expected recoveries of 87-92% and a leach cycle of less than 24 hours. The remaining 50% of the oxide material (+0.212mm) will report to the HL side of the circuit with expected recoveries of 82-88% and an estimated leach cycle of approximately 60 days.
Column leaching of the coarse fraction (+0.212mm) from the scrubber is well underway and preliminary results indicate that the majority of the gold is recovered in the first 10 days of leaching. The column leach tests will continue to run until early November when the columns are dropped so that final recoveries can be determined from the final tails assay results.
Samples from the CIL testing have been submitted for rheological and settling evaluation to confirm sizing of the circuit and tails impound components.
Mine Plan and Pit Optimization Studies
The Company is working with RPA Inc. ("RPA") to update open pit optimizations and develop a new mine plan (based on the April 2013 resource model) for the feasibility study. As part of this work, RPA is exploring the use of a more versatile mining fleet made up of smaller trucks and shovels than the fleet in the 2014 PEA. Based on preliminary work, the smaller units could represent a significant capital cost savings, improved operating costs and a reduction in the strip ratio. These improvements could lead to an expansion in the mine plan from the current resources utilized for the PEA with only a marginal reduction in grade while maintaining or improving on the project returns outlined in the PEA. Completion of the mine plan is expected in November so that work can continue on the environmental and social impact assessments and the relocation action plan required for the mining permit application process.
Source: http://www.orezone.com