This chapter delves into the process of valuing mineral projects, exploring fundamental concepts and techniques essential for determining their value. It begins with an explanation of the time value of money, laying the groundwork for understanding the significance of discounted cash flows in valuation. The chapter then covers core elements of cash flow analysis through tables and its applications, including discounted cash flow modeling, and the calculation of net present value (NPV), internal rate of return (IRR), and payback period, elucidating their critical roles in project evaluation. Furthermore, various valuation methods are scrutinized, including market-based, income-based, and cost-based approaches, along with the net asset value method. Each method is explained in detail with real-life examples of project evaluations. Finally, the chapter details the processes of sensitivity studies of key factors that influence project valuation, particularly NPV, through a case study of a mining project. Through detailed examples, this chapter equips readers with the knowledge and skills necessary to perform valuations of mineral projects, providing a foundation for subsequent project optimization.