Case study Mine Feasibility Study Drayton is an open-cut coal mine that began operating in 1983 and currently produces around 5 Mt of thermal coal each year for export and domestic markets. Drayton and the contiguous Drayton South deposit are situated in the Hunter Valley coalfi elds. Drayton reserves are estimated at 35 Mt. Ausenco Rylson was contracted to assist the Drayton South feasibility study with OPEX cost forecasting and capability analysis of existing fl eet in order to understand the viability of moving existing equipment to the new operation. Equipment models were built using data from the existing operation and in consultation with site personnel. A comprehensive model was developed for both the mine and the processing plant and various operational scena

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