Mining: Which Pits to Work and When to Close Them Down
Objective
The objective is to maximize the following function, where TotalRevenue is a linear function of ExtractedPerYear, and TotalCost is a linear function of IsOpen:
![\[ \Variable{TotalProfit} = \Variable{TotalRevenue} - \Variable{TotalCost} \]](images/ormpex_ex70007.png)
The objective is to maximize the following function, where TotalRevenue is a linear function of ExtractedPerYear, and TotalCost is a linear function of IsOpen: