Extraction furnace exp doesn't stack if you grab more than 1 item out

[Cruuk]

I.E. smelting Limonite at level 1 gives 3.3 exp whether it's grabbing 1 ingot out of the furnace or 64. I'm aware that the bonus smelt ability has to be per 1 item grab, but I don't remember if this same limitation applies to the skill exp gained as well

[Posatasa]

for me i will press 'Q' to throw them out to get every piece of exp and bonus (method from Rain_Flying)