Under affirmative waste, which doctrine allows mining existing minerals if they were being mined at the time of grant?

• A. Open mines doctrine
• B. Express authorization by grant
• C. Ameliorative exception
• D. RAP

Answer: (A)

In affirmative waste, the open mines doctrine permits a life tenant to continue mining minerals that are already being mined at the time the interest is granted, but only to the extent of those existing operations. This means the life tenant can continue and recover the minerals that were actively being mined when the grant occurred, preserving the value of ongoing mining, while not allowing new mining or expanding operations beyond what existed at grant. If mining is not already underway at grant, the life tenant cannot start or enlarge mining in a way that would constitute waste.

So, the reason this choice is the best is that it directly addresses the scenario of continuing, not starting, mining based on what was happening at the grant date. The other doctrines or concepts fail to fit: an express grant would require explicit language authorizing mining, ameliorative waste concerns changes to the property that improve its value, and the Rule Against Perpetuities deals with timing of future interests rather than mineral extraction practices by a life tenant.