meant to haul fresh nether lava to the nearest power treatment plant we've got quite a few of these here, along with it's minions, which transfer the lava wherever their side color indicates they should go (they're colorcoded) also it's rumored that nether lava is a better fuel source than normal lava (this is lore and is not true in actual minecraft/minecraft create mod)
scientist (from tower heroes) for all the rolling stock and engines she's made shown here
