Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 10 — Blast furnace, coal, cast iron and rolling  /  About year 21
10.08

Blast furnace ⚠

a tall stone stack lined with firebrick, run for months without stopping

MakingYear 21Stands on 108 earlier

AWhat it needs

Needs 108 other products in all, 4 of them directly.

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