Amegbey, N., Afum, B. O., Ndur, S., and Coffie-Anum, E., (2016), “Impact Assessment of Atmospheric Pollutants Emissions from Mining Operations at Ghana Managanese Company Ltd.

  • Bright Oppong Afum University of Mines and Technology (UMaT)
  • Newton Amegbey University of Mines and Technology (UMaT)
  • Samuel Ndur University of Mine and Technology (UMaT)
  • Emmanuel Coffie-Anum Ghana Manganese Company (GMC)
Keywords: Impacts, particulates matter, concentration levels, environment, prediction


Atmospheric pollutants diffusion study was conducted around the operational sites and immediate neighbouring communities of Ghana Manganese Company (GMC). The pollutants are emitted by sources associated with the main operations and activities of the mine including on-bench rock drilling and blasting, material excavation and hauling, vehicular movements and mine machinery exhaust emissions, as well as crushing of blasted rocks. Methodologies involving computerised dispersion modelling was used to estimate near-field ambient pollutant impacts on neighbouring Tarkwa-Banso community, at 400 m from the Mine’s nearest operational site (Pit C North). The community is located in the dispersive fan of North to the East-South-Eastern part of the mine site. Measured airborne particulates (PM10 and TSP) concentrations in the Tarkwa-Banso community were below Ghana EPA’s permissible limits of 70 µg/m3 and 150 µg/m3 respectively. The predicted monthly concentrations of the airborne particulates (PM10 and TSP) at 400 m buffer from the crushing plant were greatly lower than the permissible regulatory requirement. With effective dust mitigation measures, the predicted PM10 and TSP dust concentrations emanating from drilling, blasting, loading and hauling activities at Pit C North were also generally lower than the regulatory requirement. All the predicted monthly concentrations of NOx and SO2 at the 400 m buffer from Pit C North were significantly lower than the allowable regulatory requirement of 60 µg/m3 and 100 µg/m3 respectively. The study indicates that, the operation of the crushing plant together with the general mining operations at Pit C North in the mine has no significant impact on Tarkwa-Banso community.

Author Biographies

Bright Oppong Afum, University of Mines and Technology (UMaT)
Department of Mining Engineering, Lecturer
Newton Amegbey, University of Mines and Technology (UMaT)
Department of Mining Engineering, and Professor
Samuel Ndur, University of Mine and Technology (UMaT)
Minerals Engineering Department, and Senior Lecturer
Emmanuel Coffie-Anum, Ghana Manganese Company (GMC)
Environmental Department, and Coordinator


AMEC (2011), “Atmospheric Environment – Emission Sources and Air Quality Modelling”, Unpublished Report, AMEC Earth and Environment, Version 1.0, Avanti Mining Inc., Kitsault Mine Project, Canada, 37 pp.

Amegbey, N. and Afum, B. O. (2014), “Atmospheric Pollutants Diffusion Studies”, Unpublished Report, Ghana Manganese Company, Tarkwa, 48 pp.

Amegbey, N. and Afum, B. O. (2015), “Blast Impact Prediction Studies at Ghana Manganese Company (GMC) Ltd, Nsuta, Ghana”, Ghana Mining Journal, Vol. 15, No. 1, pp. 73-77.

Anon., (2014), Osiris Operating Instruction, Turnkey Instruments Ltd, United Kingdom, 42 pp.

Boubel, R. K., Fox, D. L., Turner, D. B. and Stern, A. C. (1994), Fundamentals of Air Pollution, Academic Press, 3rd Edition, California, USA, 574 pp.

GMC-EIS (2012), “Environmental Impact Statement (EIS) for the Proposed Pit C North Project, Ghana Manganese Company (GMC)”, Unpublished Report, Ghana Manganese Company, Tarkwa, 126 pp.

Kuma J. S. (2006), “Hydrogeological studies on the Tarkwa gold mining district, Ghana”, Bulletin of Engineering Geology and the Environment, Volume 66, Issue 1, pp. 89-99.

Rau, G. R. and Wooten D. C. (1980), Environmental Impact Analysis Handbook, MacGraw Hill Book Company, Wooten D. C. (Editors), USA, 642 pp.

USEPA (1998), Compilation of Air Pollutant Emission Factors, Volume I: Stationary Point and Area Sources, 5th Edition. Office of Air Quality Planning and Standards, U. S. Environmental Protection Agency, Research Triangle Park, North Carolina, 697 pp.

Environmental and Safety Eng. Articles