Feather#3. .These days I'm approach not tower but from my previous tower experience I would suggest that if you didn't cross the Cat1 until we were certain we didn't need the runway for anything else we would never achieve the 1 minute or visual splits which make a 45 per hour departure rate possible. In the case of 09R deps. there are multiple line up possibilities and one could have as as many as 3 aircraft on the runway at the same time. That is how the rates are achieved.. .. .I guess there is just no substitute for spare concrete... and we haven't got any! <img border="0" title="" alt="[Smile]" src="smile.gif" />