Table 2.

The properties of the parameters and their ranges.

Parameter	Sign	Unit	Minimum	Maximum	Mean	Standard deviation
Inputs
Number of blast-holes	n	–	10	323	77.28	45.05
Hole depth	ld	m	2	12	9.95	2.65
Burden	B	m	3	4.2	4.02	0.33
Spacing	S	m	3.5	6	4.85	0.31
Powder factor	q	Kg/m3	0.06	0.75	0.35	0.11
Charge per delay	Q	Kg	43.06	697.72	187.43	88.83
Distance	d	m	305	1167	741.22	248.32
Output
Peak particle velocity	PPV	mm/s	1.25	28.15	15.08	4.35