Data Checklist for Jaw Crusher Selection 1.Type of material to be crushed 2.Bulk density of feed material 3.Maximum lump size 4.Characteristics of the material – hard, soft, slab like, moist or wet, sticky, contains clay or other deleterious materials 5.Capacity in tonnes per hour 6.Method of feeding to be adopted. Apron feeder, vibrating grizzly.