Following the adoption of a mine development strategy and the selection of an appropriate mining method(s) the end of life plan is studied to ensure it will meet laid down technical and economic guidelines. Mining splits and echelons are developed using standard scheduling techniques. After first pass scheduling, the sequence will usually be modelled with 2-D and/or 3-D boundary element computer programs and the entire mining programme is optimised via an iterative process to ensure the safety and stability of open pit or underground mining operations and surface installations.
This is another important phase of the feasibility process; however, it can frequently be neglected. One of AMC's primary objectives is to maximise recovery from future ore reserves by ensuring that all un-mined ore is preserved in a mineable condition.
Once the mining sequence has been finalised, secondary development can be "mined" on a computer model, or layed out manually depending on the client’s requirement. 3-dimensional mine layout and stoping plans are useful for ensuring that all access and infrastructural aspects have been considered, and can be a most useful visual aid if project presentations are required to seek financing.
Schedules are developed using up to date project management and scheduling software systems. These project management tools are used to control progress and prevent slippage during actual execution of the project. They are then used for development of the detailed project implementation schedules to level resource requirements and smooth the cash expenditure forecast.
Implementation schedules will include capital development; contractor mobilisation windows; procurement; shaft, declines and out-loading infrastructure; surface plant construction, upgrading and refurbishment; recruitment and training; stoping commencement and production build up; and all key project milestones.
