A couple of pictures to help illustrate Flightrider's great post.
LBA in 1947, taken pretty much from the same spot in the air as the one above
http://www.leodis.net/display.aspx?r...0&DISPLAY=FULL
15/33 under construction : 1964
http://www.leodis.net/display.aspx?r...1&DISPLAY=FULL
My own favourite memory from pre-extension LBA days was the green telephone exchange box at the end of 15. Could stand on that as a 10 year old, look over the fence and be looking straight down the centre line about 25 metres back from the start of the runway. That you had to wait 4 hours between movements did take the shine off of things! Always amused that in these post extension days, aircraft landing on 14 touch down pretty much where they did on 15 due that cursed displaced threshold