start.lua

while true do
if turtle.suckUp() then
 for i=1,16 do
 turtle.select(i)
  if turtle.getItemDetail() ~=nil then
   if turtle.getItemDetail().name =="ic2:nuclear" and
   turtle.getItemDetail().damage == "2" then
    turtle.dropDown()
    end
  end
 end
 turtle.craft()
 turtle.dropDown()

end
end