The Gravel Dropper

slotCount = 1
stackCount = turtle.getItemCount(slotCount)
turtle.select(3)
turtle.refuel(2)
turtle.forward()
turtle.select(slotCount)
while true do
while turtle.compareTo(1) do
	if (stackCount == 0) then
		slotCount = slotCount + 1
		turtle.select(slotCount)
	end
	turtle.placeDown()
	stackCount = turtle.getItemCount(slotCount)
turtle.forward()
end
end