Table 2 Impact crushing and screening results.

From: Study on the law of ore dilution and loss and control strategies under brow line failure in sublevel caving mining

Lithology

Mass(d < 10 mm)/g

Mass (d > 10 mm)/g

Unscreened ratio/%

Biotite plagiogneiss

233

367

61.17

Garnet magnetite quartzite

286

314

52.33

Pyroxene plagio-gneiss

296

304

50.67

Granite

213

287

47.83

Magnet-bearing gneiss

407

193

32.17

Amphibole plagiogneiss

439

161

26.83