And I've got a Queen of England a huge living goo thing that calls himself Bob. Just kiding. Except the Bob part...
Anyway, I found that a person/thing can be revived only once without any effect, second time it turns it into a horribly awesomely strange mutant, altough his mind ussually is still fine. Also, I found that these crystals attract people named Kane, cause mutation if you stand near them for a long time (altough reeived with this crystals people are immune) and can be used as source of energy, but only if you have refineries, whatever that would mean...