Field variables | Mean | Skewness | Range | Minimum | Maximum |
Bins overloading delay time, min | 314.36 | 2.98 | 2379 | 0 | 2379 |
Conveyor overloading delay time, min | 371.27 | 0.81 | 995 | 20 | 1015 |
Preventive Maintenance delay time, min | 172.19 | 2.62 | 608 | 37 | 645 |
Gas management delay time, min | 30.44 | 2.10 | 211 | 0 | 211 |
AFC repair time, min | 79.80 | 3.64 | 787 | 0 | 787 |
Chock supports repair time, min | 303.08 | 1.90 | 1074 | 25 | 1099 |
Crusher repair time, min | 12.30 | 4.05 | 203 | 0 | 203 |
Hydraulic pumps repair time, min | 45.77 | 1.31 | 182 | 0 | 182 |
Gate Conveyor repair time, min | 319.33 | 4.90 | 3581 | 0 | 3581 |
Maingate drive repair time, min | 9 | 2.49 | 79 | 0 | 79 |
Shearer repair time, min | 205.19 | 1.48 | 821 | 0 | 821 |
BSL repair time, min | 118.30 | 2.28 | 760 | 0 | 760 |
Injury severity rate | 158.19 | 1.93 | 1012.4 | 0 | 1012.4 |
Equipment downtime, min | 2003.11 | 3.83 | 9051 | 639 | 9690 |
Productivity, t/hr | 1468.21 | −2.35 | 858.57 | 796.73 | 1655.3 |