You're blow to that power line has given us the chance that we need to finally crush those Black Cerberi and their new creations. 

What we have been able to discover is that these artifacts are from a long dead race that had used biometal, but unlike other previous discovered species, they didn't get eliminated by their own creations. It seems a giant meteor impacted on their main city devestating the populace and their whole infastructure. What was left soon just faded away and died. 

They were good at biometal in a level that we have not been able to achieve. Doctor Benedict's research must have been these breakthroughs we are fighting and when the Cerberi learned of it, they took her, her team, and the new-found knowledge.

What this new knowledge is, we will never know, but we're going to make sure that the rest of the Cerberi Collective will never know either. We've contained all the Cerberi involved here so if we eliminate them, then the rest of the galaxy...maybe even the universe...will be safe.