Table 3.
Break points for the mine environmental index (MEI).
| MEI | MAQI | TCI |
|---|---|---|
| 0–50 | Very good | Mostly comfortable |
| 51–100 | Good | Comfortable |
| 101–200 | Moderate | Neutral |
| 201–300 | Poor | Discomfort |
| 301–500 | Very poor | Least comfort |
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