Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 16 — The builder's tools: spanners, pneumatic hammer and construction crane  /  About year 56
16.13

Pneumatic rock drill ⚠

the air hammer turning a long steel bit: shot holes in rock in minutes, for mines, cuttings and tunnels

MakingYear 56Stands on 220 earlier

AWhat it needs

Needs 220 other products in all, 4 of them directly.

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