Core Mining

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Core mining uses the core miner building on top of a core seam to produce core fragments which can be processed as a source of infinite resources. It requires a lot of power, and increasing the number of miners will give diminishing returns, but it can be a powerful way of gaining resources.

Core Seams[edit]

An open core seam

A core miner can only be placed on a core seam, found only on planets and moons.

A core seam can be temporarily sealed with a grenade or cliff explosive in order to build over it. It can be reopened by placing a core miner on the seam.

The number of core seams on a surface is proportional to its size, so large planets will have many more core seams than small moons. Core seams will become more spread out further from the center of the planet or moon.

Core seams discovered will be marked on the map with the core seam icon.

Core seam map icon

Core Fragment Type[edit]

Core miners on each planet or moon will produce a different type of core fragment depending on the primary resource of the body. Each specialized fragment can be processed for its specific resource as well as a few generic core fragments, which can be processed for basic resources. Core mining on Nauvis only returns generic core fragments.

Core Fragment Processing[edit]

Core fragments are processed by being crushed in a pulveriser, twenty at a time. Crushing specialist core fragments produces a quantity of the specialist resource, a piece of stone, and 0-4 generic core fragments. The generic core fragments can be further processed into 8 iron ore, 8 copper ore, 4 coal, 8 stone, 16 crude oil, 16 water, and 4 pyroflux. Additionally there is an 8% chance to receive an uranium ore.

Mining Efficiency[edit]

The first core miner placed on a planet runs at 100% efficiency, but each additional miner placed reduces the efficiency of all the others on the same planet. Placing additional miners always increases the total core fragment output overall, but the additional output decreases with each miner. Each additional miner still has the same 25MW power cost, so successive miners become less and less power efficient as well.

Additional core miners reduce output even if inactive and unpowered. As soon as a core miner is placed over a core seam, it reduces the output rate of all other core miners on the same planet, even if the new core miner is unpowered or its output is blocked.

Core miners do not have module slots, and cannot be affected by beacons, but mining productivity research does apply. However, the pulverisers processing the core fragments can benefit from productivity modules, and can greatly increase the effective output of the core mining process.

The efficiency of each individual core miner decreases geometrically as more miners are active on a planet or moon, using the following formula (a mining time of 1425% would be input to this equation as 14.25):

Average Core Fragments per Second in Total = (100 / mining time) * ((zone radius + 5000) / 5000) * Productivity Research Bonus * √(Number of miners)

Average Core Fragments per Second per Miner = ((100 / mining time) * ((zone radius + 5000) / 5000) * Productivity Research Bonus) / √(number of miners)

Handy Desmos Calculator:

Number of miners Total Yield/Second (on default Nauvis radius of 5692, with a mining time of 1425%) Yield/Second/Miner Incremental Yield/Second
1 15.00 15.00 -
2 21.22 10.61 6.22
3 25.99 8.67 4.77
4 30.01 7.50 4.02
5 33.56 6.71 3.55
8 42.44 5.31 2.74
12 51.98 4.33 2.21
20 67.11 3.36 1.70
36 90.04 2.54 1.26