3 events with tag "environment"
150 BC
ID: 5325
Rio Tinto under Roman control - massive expansion using hydraulic mining, 10,000+ workers, slag heaps reach 30 meters high
ID: 5325
77
ID: 5330
Pliny describes Spanish mining - Elder Pliny records 20,000 pounds gold annually from northwest Spain, environmental destruction
ID: 5330
1962
ID: 1790
Rachel Carson publishes 'Silent Spring,' beginning environmental awareness
ID: 1790