Sort of an interesting day on Friday, initially had to collect some RPA's and managed to get on the roller in 2 moves. Getting better with those things, when they made them there should have been a bit more play in the side ward movement. Then for the first time i had to take some 'heavy' and I mean heavy stuff to the Decompression chamber, never been and was interested how it all works. Once the stuff was inside the door which must have been at least a 1.5ft thick was closed, the hydraulic locks applied and I went to the drivers rest room. Cup of tea and a bit of TV was in order as this took just over an hour to do. It simulates cargo hold at 30.000ft so if there is something nasty amongst the cargo it will go 'pop' there and not in the aircraft.