But 5 red alloy + 1 copper + 2 silver = 4 signalum instead of 1 red alloy + 1 copper + 2 silver, which means you need 5 times the red alloy.
Although dark ash will still be produced after the update, the diesel engine can make me less dependent on coal, so it will not produce too much dark ash, which can be quickly consumed by concrete or bituminous peat. (I gave all the calcium carbonate in the base to the fluidized bed burning box, and there wasn’t much leather to collect the sticky resin, so I couldn’t use these methods to consume the black ash quickly And considering the need for a lot of iron in the lategame)