Oh dear, oh dear, I try to ask a serious question and it descends into this sort of thing. Perhaps I should just apply for the job and see what happens.
The first MB seats were tested using a live subject, if memory serves a workshop chargehand who didn't get out of the way fast enough and ended up doing several dozen ejections.
What they now do is use dummies which are ballasted and sprung to respond like a human being, but contain instrumentation so that all of the forces applying can be recorded - they then do the best they can within the known human body tolerances. They have four main places to do these tests:-
(1) A firing rig at their HQ in Denham.
(2) A converted 2-seat meteor, where the dummy is fitted in the back seat and ejected by the pilot in the front.
(3) The blower tunnel at Boscombe Down, where they can do ejections from the actual type of cockpit it'll be fitted in, then catch the seat in giant nets.
(4) A high speed trolley at Farnborough.
The other standard question is whether they invented it all themselves; they didn't, having bought-out the other British ejection seat manufacturer, Folland, in the 1960s.
I suppose this means nobody has any idea how much they pay their Engineers then?