The ore pulverizer is the first machine one should make when using the liquid metals mod. It requires a quarter stack of iron, as it needs 5 iron ingots, 2 pistons, a block of iron and a Conductive Wooden Pipe. This machine turns ore into ore gravel tramp.
The fine grinder requires an Ore Pulzerizer, 2 iron gears, 5 gold ingots, and a stone conductive pipe. The fine grinder turns ore gravel into ore dust