User blog comment:RobinCarr/How Does Crystal Production Shutoff/@comment-5116140-20130122025145/@comment-5116140-20130122031429

That's a really great question Wikiacon. I am afraid in the first few months of the game, I only had eyes for collecting dinos - but maybe others can provide this info. I suspect you may be right in postulating a single mechanism explains how both these cases are handled. Now you have given me two things to think about!