Table 22 Crushing station statistics.
Area | Lump coal (t) | Final poor quality coal (t) | Lump coal rate (%) | Average lump coal rate (%) |
|---|---|---|---|---|
Control group | 18080 | 19140 | 48.58 | 48.52 |
18830 | 20200 | 48.24 | ||
17050 | 18470 | 48.00 | ||
16085 | 16560 | 49.27 | ||
Test group | 19855 | 19740 | 50.15 | 51.02 |
14175 | 13570 | 51.09 | ||
14335 | 13330 | 51.82 |
