You can't spawn two fresh minefields on one playthrough, but you can find a bones file with the minefield in it, then have the minefield spawn normally on another floor.
Got to attnam, 2 oil lamps, both wishes WoCloning and a scroll of charging. Nice. Then I go a buy an atavus book and get like 8 readings out of it. Pray and I get....a scroll of wishing!!! (I didn't know he could do that, I was hoping for the armor). I save to check the forums for idea of what to wish for and when I go back to play it tells me something to the effect of "your save file is from an older verison of ivan and is no longer supported you need to start a new character."