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 | Risk level 1 (very low) | Risk level 2 | Risk level 3 (low) | Risk level 4 | Risk level 5 (moderate) | Risk level 6 | Risk level 7 (high) | Risk level 8 | Risk level 9 (extremely high) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40.0% | 85.1% | |||||||||||||||
| 27.5 | 7.76% | 31.1% | 62.7% | 9.02% | ||||||||||||
| 1.31% | 19.2% | 35.4% | 16.7% | 12.1% | 1.37% | |||||||||||
| 4.44% | 14.5% | 1.44% | 7.72% | 6.62% | 11.6% | 2.26% | 7.65% | |||||||||
| 1.14% | 4.16% | 3.89% | 1.82% | 1.65% | 1.29% | 2.81% | ||||||||||
| 1 | 60.2% | 8.02% | 4.25% | 15.4% | 27.3% | 28.8% | 8.62% | 35.9% | 8.13% | |||||||
| 20 | 34.2% | 5.89% | 3.22% | 6.32% | 13.3% | 5.28% | 6.71% | 1.10% | ||||||||
| 66.1% | 8.16% | 83.6% | 7.20% | 3.65% | ||||||||||||
| 13.5 | 15.8% | 2.20% | 2.38% | 7.63% | 1.85% | 5.67% | 1.41% | |||||||||
| 1.15% | 9.95% | 3.47% | 14.3% | 28.1% | 12.4% | |||||||||||
| 5.79% | 9.45% | 7.80% | 26.6% | 8.21% | 10.1% | 7.36% | 2.65% | |||||||||
| 1.02% | 5.45% | 6.38% | 12.1% | 5.97% | 2.28% | |||||||||||
| 2.31% | 6.04% | 9.60% | 10.5% | 23.4% | 10.7% | 12.3% | 4.43% | 1.67% | ||||||||
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