so currently in the 152ngt pack I am running a quarry with 4 hobbyist's steam engines, so far it has run great, what I've noticed though is it is digging up a dismal amount of coal, also it seems like my engines are randomly obtaining coal without my intervention, i'm on a single player world so I know there is no one putting it in there while i'm not around. so my question is, do these engines actually accept coal straight from the quarry?