Maybe you can prospect on undeveloped land, but you certainly cannot legally start extraction without doing a lot of paperwork first. And in the wake of the San José episode the government is tightening up on what pirquineros can do. So maybe you should get in touch with SERNAGEOMIN. If they are using explosives, the police may take an interest.
But at the end of the day, even if you get rid of them from one area , they will just pop up somewhere else. The current minerals prices make this kind of theft irresistible.
I wouldn´t bother with a lawyer; unless he specializes in mining law its a waste of time and money. And I would guess your caretaker is getting some benefit from the current arrangement.


