If the same mining outpost keeps attracting attacks, adding another turret treats the immediate danger. It does not explain why the waves keep coming. On Nauvis, check both your defenses and the pollution reaching nearby nests before expanding the mine again.
Read the map and the production statistics together
Turn on the pollution layer in the map. The red cloud shows where pollution has spread; the production statistics identify sources and absorption. The official wiki’s pollution explanation connects spawner absorption with attack formation. A busy outpost at the cloud’s edge deserves attention even when the main factory walls look quiet.
Look for a practical mismatch: new drills are running, but the ammunition supply was designed for the previous outpost. Mark that location as the first place to inspect. Do not assume every damaged wall needs the same upgrade just because all damage appears in the same alert colour.
Try a small efficiency upgrade where it matters
A normal-quality tier-one efficiency module reduces a machine’s base energy requirement by 30%. The minimum is 20% of base usage. Pollution is affected by that energy multiplier as well, so the benefit is not limited to your power graph.
For a continuously running ordinary electric mining drill with a base rate of 10 pollution per minute and no other module or beacon effects, the calculation is straightforward: two such modules leave 40% of the baseline, or 4 pollution per minute. Three reach the minimum, or 2 per minute. The third module does not take the machine to 1 per minute, because the floor applies.
Test this on the threatened patch before spending resources across the entire base. Check the drill’s displayed effects and the statistics afterward. A single comparison is easier to interpret than changing drills, power production and defensive layout simultaneously.
Keep the outpost supplied while the cloud changes
Reducing emissions does not erase pollution already present or recall an attack that has formed. Keep turrets supplied and damaged structures repaired. If ammunition delivery is unreliable, fixing that route can be more urgent than adding equipment that will also run empty.
Do not confuse fewer attacks with frozen evolution
Pollution’s contribution to evolution depends on pollution produced, rather than only the portion absorbed by nests. Keeping a cloud away from a nest is therefore not the same as stopping enemy evolution. Nor does switching electricity generation alone remove the direct emissions of every machine.
Use this as a Nauvis pollution-and-defense check, not a universal rule for every Space Age planet or a world with pollution disabled. The useful result is a specific decision: secure the supply route now, reduce emissions at this patch next, and inspect the cloud again before the next expansion.