Metal Hole

Cost of the 1st level:

402010CRP 1.25
Specially cultivated insects are born to process land rocks in search of residual metal deposits. After death and decomposition, enzymes are produced to convert the dead body into a useful metal for swarm use. As there are many insects working in the burrow that do fine work, they require a lot of control. 20% more metal can be extracted on sandy planets.

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Comparison by level
Lvl Production of metal Energy
1 30 -6
2 62 -7
3 95 -8
4 129 -9
5 165 -10
6 202 -11
7 241 -13
8 281 -15
9 322 -18
10 365 -20