Board Thread:General Discussion/@comment-12330013-20160101022123/@comment-24577221-20160216004455

The low-element monsters are good in the mine primarily for players at lower levels, or anyone who wants to get lots of "random" items in preference to the more special items from the mine.

I send in a 4-element monster when I'm not expecting to be playing for a while, but my routine often includes starting a 4-element in the morning to search all day, a 3-element around supper time to search through the evening, and a 4-element before bed to search through the night. I have to sleep, and I'm not going to get up to play the game during the night, so 20 hours of searching is about all I can manage each day. I suppose that if I changed my routine, I might be able to squeeze in another couple of short-period monsters, but I'm not that desperate. :-)