What is the general rule for VOLUNTARY or AFFIRMATIVE WASTE?
The life tenant must not consume or exploit natural resources on the property (such as timber, oil, or minerals), unless one of four exception applies (PURGE):
Prior Use: prior to the grant, the land was used for exploitation (note: Prior Use and the Open Mines Doctrine)
Repairs: life tenant may consume natural resources for reasonable repairs and maintenance
Grant: life tenant may exploit if granted the right
Exploitation: the land is suitable ONLY to exploit