At Cerrejon, Minex is used in the geology area and in all phases of mine planning. Borehole information in a database form is imported into Minex. The raw information is used to create a 3-D geological model that represents a broad range of critical data - not just the volume of the coal and overburden, but also quality parameters (for example, ash, sulphur and calorific value) and a comprehensive mineral analysis. Once the 3-D model is created, verified and accepted, the mine uses Minex to lay out various pit shells and determine the optimal approach to development. The life-of-mine plan, which is updated annually, is rolled out to mid-range planners for five year mine plan sequencing. From there, planners use Minex to produce a detailed month-by-month forecast for the first two years, which becomes Cerrejon's business plan. Finally, short-range planners lay out monthly mine plans for 40 shovels of different sizes and applications, a cyclical process that takes approximately two to three weeks. Detailed weekly and daily plans are also created.
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