As the title says, a late-game setup for Military (Grey) Science Packs. It produces steady 1k/min and is entirely fed with bots.
If you ship in all materials by train, you could easily set up train stations next to the roboports.
It needs to be provided with:
~ 16k Iron Plates
~ 5.5k Copper Plates
~ 3.7k Coal
~ 400 Steel
per minute, and needs ~350 bots to operate (@ worker robot speed 12).