Just think of a molton pool of liquid mineralized rock far beneath the earths crust under tremendous pressure. It melts and forces through paths of least resistance up and down expanding in girth where it can, narrowing where it gets restricted. As it cools, it precipitates out copper, nickel and PGE's at various stages, meandering on for kilometers. It comes close enough to the earths crust in places to be picked up as ATEMs, maybe even to the surface. All the ATMs may be connected as one long conduit at depth or there may be several conduits from the motherload. This has been referred to as the upside down elephant and QQ has revived it as her avator. One thing is for sure, there is one heck of a lot of ore strung out through McFaulds and it had to originate from somewhere.