Actually, thinking about this for an evening I might have it sorted out. It's pretty much what Sarge suggested combined with the FFF posts about the train interrupts using generic filters. The basic method is that consumers emit a 1 signal for the type they need (when stock is low) and producer stop...

I'm shooting for a slightly different setup, the merits of which are debatable. I'd like trains to only be in motion if a factory is requesting goods. My interrupt setup (example below) has the conditions that a request for iron ore is on the circuit network, along with the station identifier (0). T...

TLDR It would be cool if an interrupt condition could be used to control the number of trains with a route on a particular station. This would allow trains to reserve a route for themselves, keeping the number of trains responding to an interrupt to a reasonable amount. Motivation I've been diving ...

https://mods.factorio.com/mods/bkrauscs/FusionPower

The idea was to create a low upkeep power system that is challenging and time consuming to build.

By using vast amounts of water through roughly 250 chemical plants a stable fusion reaction can be made that generates up to 1.2 GW revenue.