Mining width/m | 10 | 20 | 25 | 30 | 35 | 40 | 50 |
Data collection number | 1 - 22 | 23 - 51 | 52 - 73 | 74 - 113 | 114 - 148 | 149 - 170 | 171 - 229 |
Mining width/m | 60 | 65 | 75 | 80 | 90 | 100 | 110 |
Data collection number | 230 - 278 | 279 - 356 | 357 - 376 | 377 - 419 | 420 - 451 | 452 - 469 | 470 - 509 |