Core Miner

The Core Miner is an advanced long-term mining drill, which consumes very large amounts of power to produce an infinite stream of mixed resources.

Production
The Core Miner produces Core Fragments, which are then processed into normal ores in the Pulveriser. The type of Core Fragments produced depends on the Primary Resource of the location. On planets with no Primary Resource (such as Nauvis), the miner produces "regular" Core Fragments, which are processed into a mixture of all common ores and liquids. On planets with a Primary Resource, the miner produces Core Fragments of that resource, which are processed into a mixture of that resource, Stone, and more regular Core Fragments.

Efficiency
The efficiency of Core Miners decays exponentially as more miners are active on a planet, using the following formula:

6*√(number of miners)

If core mining on a moon, the result is 1/2 of the above formula. The Core Miner benefits from productivity research, however it does not benefit from Beacons. The Core Miner itself cannot use Productivity Modules, however the Pulverizers processing the Core Fragments can.

Cost
The core miner has no other input cost than electricity, however at 50MW it has the highest power consumption of any terrestrial building.