Just noticed in a mineshaft that fences were connecting to oil (quick test confirms ladders can also be placed on oil, little trickery to ensure they don't replace oil though)

This will explain it better than I can as a non coder VazkiiMods/Botania#2365

Probably more than just oil too

Not exactly needed but Versions:-
Forge: 14.23.0.2493
TechReborn: 2.7.4.243
RebornCore: 3.4.3.114