Impact of ISO 14001 Environmental Management System on Key Environmental Performance Indicators of Selected Gold Mining Companies in Ghana

Table 3

Annual energy consumption per ounce of gold at GFGL.

Year	Total energy consumption; (TJ)	Ounces of gold produced; (Oz)	Energy consumption; (GJ/Oz)
2004	1,460.98	553,175	2.6411
2005	1,887.04	724,971	2.6029
2006	2,252.68	720,866	3.1250
2007	2,522.32	657,064	3.8388
2008	3,104.89	629,308	4.9338
2009	3,260.68	664,514.51	4.9069