🛠️ Invention or technique

Potosí hydraulic system and ingenios

Sistema hidráulico e ingenios de Potosí

Date
1573-1621 · confidence medium
Place
Cerro Rico, Potosí, Bolivia
Credited to
Viceroyalty of Peru (Viceroy Toledo's reforms); mita labour
Field
Matter & energy

What it is

A chain of reservoirs and canals in the mountains that fed water-powered ingenios to grind silver ore before amalgamation. By about 1621 some 130 mills lined the Potosí riverbed.

Figures for mills and reservoirs vary by source (110-140 ingenios in the early 17th century); the work was mostly carried out between 1573 and 1621.

What it led to

  • Industrial ore grinding on an unprecedented scale in the Americas
  • Silver output that fuelled 17th-century world trade
  • Massive exploitation of mita labour
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Sources✓ verified 2026-11-04