NAMVS Presentation: Ventilation System Design for the Wassa Underground Mine

The Wassa Gold Mine is located in the southern portion of the Ashanti Greenstone Gold Belt in Ghana, northwest of Tarkwa.

Case Studies of Mine Ventilation II   |   Tuesday, April 30, 3:30pm   |   Room 510B

This paper describes a ventilation project at the Wassa gold mine in Ghana.  Golden Star (Wassa) (GSWL), a subsidiary of Golden Star Resources, owns and operates the mine. Golden Star holds a 90% interest in GSWL, while the Ghanaian Government holds the remaining 10% ownership, earning a 5% royalty on the gross revenue of GSWL’s gold production. Construction of the underground mine began in mid-2015 and pre-commercial production started in June 2016. Commercial production from the underground mine was achieved in January 2017. This paper describes the ventilation studies performed to support the initial development and production at the mine. The initial ventilation design included four, parallel surface exhaust fans.  Future designs will include booster fans, new primary fans, and additional connections to surface. The paper describes the long-term ventilation planning goals and expectations as the mine achieves a production of 4,000 tpd with truck haulage to surface.

SRK Speaker:

Brian Prosser - Principal Mine Ventilation EngineerBrian Prosser
Principal Consultant
Mr. Prosser has over 20 years of experience in the design and planning of large underground ventilation systems, ventilation and air climatic surveys, network analysis, dust and gas control, and the development of network ventilation and fire models. He has experience overseeing numerous ventilation studies involving nuclear waste repositories, hard rock mines, and coal mines. Brian has performed ventilation studies, surveys, optimization and planning for mines located in North America, South America, Europe and Indonesia. Brian has been responsible for survey planning, coordination with third party consultants and vendors, business development and job estimating. He has also conducted ventilation short courses to expand the knowledge base of clientele.
SRK North America