A world map shows nitrate mining locations marked by orange circles with "N." Key areas include the U S, Mexico, Chile, and Spain. Major clusters are in the U S (western states), Mexico, and northern Chile's Atacama Desert.
Nitrate Mines | Class | Rank | Metric tons per person | Class | Rank | Children per woman | 4000+ m | 2000–3,999 m | 500–1,999 m | 200–499 m | 1–199 m | Below sea level to 0 m | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.11% | 4.49% | 3.56% | 2.07% | ||||||||||
| 27.5 | 6.74% | 4.53% | 17.7% | ||||||||||
| 10.1% | 30.1% | 12.5% | 10.2% | 40.4% | 5.72% | ||||||||
| 18.6% | 9.30% | 14.7% | 3.94% | 13.0% | |||||||||
| 6.39% | 1.95% | 2.01% | 3.90% | 1.28% | |||||||||
| 1 | 1.47% | 14.7% | 17.8% | 32.0% | 2.89% | ||||||||
| 20 | 5.39% | 8.58% | 19.0% | 8.61% | 29.5% | ||||||||
| 65.2% | 26.5% | 2.19% | 1.47% | ||||||||||
| 13.5 | 4.90% | 4.91% | 8.08% | 1.92% | |||||||||
| 4.47% | 3.92% | 10.1% | 27.6% | 30.5% | |||||||||
| 1.88% | 13.7% | 3.18% | 20.7% | ||||||||||
| 2.13% | 37.6% | 21.2% | 12.3% | 2.25% | |||||||||
| 7.29% | 47.7% | 36.0% | 15.4% | 1.40% | |||||||||
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