A few dozen?
Couple of hundred more like.....I actually made an arc light test called '[Test] Boom I', but had difficulty sequencing the explosions (I wanted them to start at one end of the map and end at the other). I still believe this can be done, but it would have taken more time than I was willing to sacrifice at that moment.
The test map used in those experiments evolved into '[Test] Boom II', otherwise known as 'SRBM Attack' (240xIEDs, 45xVBIEDs):
Because SRBMs really don't care what order they land in!
If anyone would like to experience the full fury of this test map for themselves, send me a PM. There is now a '[Test] Boom III' on my desk, it's a fully fledged scenario (for my OSIRIS storyline) set somewhere on the Iraq/Syria border, however it's on permanent hold while I finish off various 'Heaven & Earth' projects.
PS - 'Boom IV' is on the cards too, as @37mm and I discussed elsewhere.....It's set in an oil refinery!