2 events with tag "hydraulic"
1
ID: 5328
Peak of Las Médulas production - 20,000 pounds of gold annually, 60,000 workers, 600 kilometers of canals for hydraulic mining
ID: 5328
60
ID: 5348
Ruina montium perfected at Las Médulas - Romans collapse entire mountains using water pressure, Pliny calls it 'victory over nature'
ID: 5348