pretty useless. the outdoor piles are not cotaineing much iron to begin with. youll struggle to even get 100 iron. and most of them spawn below waterlevel on top where you simply cannot mine em fully. the bigger problem was always finding them without the wishbone.

the mistlands method is faster. more risky but definitly alot more reliable than digging around the swamp. the abom would speed this process up much to begin with if you dont know where the piles even are.

this is also not makeing iron available any earlier really. you can just kill oozers to get ironscrap or just FISH for it at any point in time aswell.