NPCs composing that spawngroup :

Burynai_excavator (34%)

Burynai_sapper (33%)

Burynai_sapper (33%)

NPCs spawning around that spawngroup :
(Max range : 100)

kurn_8, range=99 (99,9,4)

kurn_30, range=91 (201,-152,-22)

kurn_31, range=79 (202,-137,-22)

kurn_32, range=80 (128,-151,-23)

Burynai_Excavator (100%)

kurn_34, range=23 (156,-98,-103)

lesser_charbone_skeleton (100%)

kurn_37, range=73 (146,-147,-104)

kurn_38, range=65 (172,-137,-104)

kurn_39, range=85 (76,-113,-105)

kurn_56, range=89 (171,14,-120)

kurn_57, range=60 (188,-26,-118)

greater_scalebone (100%)

kurn_64, range=93 (178,16,-120)

kurn_75, range=98 (248,-49,-118)

Burynai_sapper (50%)
lesser_icebone_skeleton (50%)

kurn_76, range=77 (223,-41,-118)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_88, range=9 (155,-83,-24)

Burynai_burrower (50%)
Burynai_Excavator (50%)

kurn_97, range=33 (128,-51,-49)

kurn_98, range=57 (104,-44,-49)

kurn_99, range=66 (124,-14,-49)

kurn_107, range=32 (121,-71,-24)

kurn_109, range=35 (143,-108,-24)

kurn_114, range=20 (162,-92,-24)

kurn_180, range=76 (81,-49,129)

a_skeletal_cook (25%)
thick_boned_skeleton (75%)

kurn_182, range=35 (137,-42,9)

scalebone_skeleton (100%)