Monster runways there Ops normal - not sure of the lengths or load bearing capability, but Loco Snr. advised that they used to operate extremely heavily loaded Lancasters and a miriad of other hevily loaded military equipment out of there in the WWII years.
The GA 747 is almost folk lore, and I was trying to see if anyone could verify that it did visit. Legend has it that people came from miles around to watch the departure.
Best all
EWL