page 1
page 2
page 3
page 4
page 5
page 6
page 7
page 8
page 9
page 10
page 11
page 12
page 13
page 14
page 15
page 16
page 17
page 18
page 19
page 20
page 21
page 22
page 23
page 24
page 25
page 26
page 27
page 28
page 29
page 30
page 31
page 32
page 33
page 34
page 35
page 36
page 37
page 38
page 39
page 40
page 41
page 42
page 43
page 44
page 45
page 46
page 47
page 48
page 49
page 50
page 51
page 52
page 53
page 54
page 55
page 56
page 57
page 58
page 59
page 60
page 61
page 62
page 63
page 64
page 65
page 66
page 67
page 68
page 69
page 70
page 71
page 72
page 73
page 74
page 75
page 76
page 77
page 78
page 79
page 80
page 81
page 82
page 83
page 84
page 85
page 86
page 87
page 88
page 89
page 90
page 91
page 92
page 93
page 94
page 95
page 96
page 97
page 98
page 99
page 100
page 101
page 102
page 103
page 104
page 105
page 106
page 107
page 108
page 109
page 110
page 111
page 112
page 113
page 114
page 115
page 116
page 117
page 118
page 119
page 120
page 121
page 122
page 123
page 124
page 125
page 126
page 127
page 128
page 129
page 130

Newmont Ghana Goldthe bottom of our Subika pit to verify the feasibility of underground mining in the area," Santti reveals. "If it proves suitable it will be our first in the country." The company is also engaged in exploration some 20 kilometres north of the new Amoma pit where it holds mining leases. The aim is to establish whether there is the potential for a further pit which would extend the life of the existing operations.Over the four years since mining began at Ahafo, the company has worked to optimise its mining methods. For example, work has been done to improve the sampling methodology and ore control. Mining software has been optimised, the most effective bench heights have been identified and the optimum speed at which mining can take place has been calculated. All of these things are dictated by the geology and characteristics of the local area. In a similar way, the mill and processing plant have been examined in detail so that the footprint, equipment configuration and processes can be optimised to achieve the most efficient throughput.The geology at Ahafo also has other distinct advantages. around 56 million tonnes of ore is mined annually from three open pits at the southern end of the Ahafo property: the Subika pit, the Apensu pit and the Awonsu pit. Together they produce around 0.5 million ounces of gold a year and the company believes the three pits will be able to sustain this rate for the next few years. The total reserves for the Ahafo concession, as of December 2008, stood at 9.3 million ounces of gold contained in 11 pits.NGGL is now focusing on developing some of these further pits. "We are in the process of developing a fourth open pit mine called Amoma, about nine kilometres north of our existing operations. This is scheduled to begin producing in the fourth quarter of this year," Santti says. When Amoma begins production, approximately 50 per cent of the ore processed at the Ahafo mill will be mined from Subika, 25 per cent will come from Awonsu, 15 per cent from Apensu, with Amoma contributing five per cent.Exploration has continued throughout the company's time in Ghana, and is likely to be a strong focus in the future. "We are just beginning an exploration decline from March 10 www.bus-ex.com 27"Of the total of 3,500 staff, over 30 per cent are local people"