Preliminary Feasibility Studies require development of a mine plan based on Measured and Indicated Resources and can lead to the definition of Mineral Reserves. The Preliminary Feasibility Study should result in capital and operating cost estimates with an accuracy of plus or minus 25–30%. This requires a good geological model, a mature mine plan, written quotes on major components, and advanced permitting and marketing studies. AAI has completed several Preliminary Feasibility Studies for projects for underground coal, copper, borate, trona and potash mines and for solution mines in potash and trona. AAI’s team has experience in mine planning and costing in a variety of minerals using multiple mining methods. AAI is supported by subcontractors, independent consultants, and engineers to provide expertise in underground and surface mining, processing and infrastructure, in electrical, civil and mechanical disciplines, and in permitting. At the Prefeasibility level, trade-off studies may be utilized to evaluate alternative approaches and to optimize the planned operation.
Feasibility Studies are completed to support project financing and are considered “bankable documents.” They are detailed and accurate to at least ±20%. Supporting mine plans show detailed sequencing and schedules which indicate production and ore grade on an annual basis. Ore processing is based on extensive test work, material balances and supported by detailed flow sheets. AAI has completed Feasibility level projects for coal, copper, and potash mining. AAI’s team has experience in detailed mine planning and costing in a variety of minerals using multiple mining methods. AAI is supported by subcontractors, independent consultants, and engineers to provide expertise in all phases of underground and surface mining, processing and infrastructure, in electrical, civil and mechanical disciplines, and in permitting. AAI has extensive networking contacts with construction contractors and mining equipment manufacturers for facilitating cost estimates and quotes. AAI has completed Feasibility Studies in the US and abroad that comply with the US Securities and Exchange Commission Industry Guide 7, the Canadian National Instrument 43-101, and the Australian Code for Reporting of Mineral Resources and Ore Reserves (JORC).