NPCs composing that spawngroup :

Burynai_burrower (34%)

Burynai_Excavator (33%)

Burynai_excavator (33%)

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

kurn_4, range=80 (15,-58,127)

an_odd_mole (100%)

kurn_8, range=90 (28,-61,4)

kurn_9, range=30 (0,13,3)

scalebone_skeleton (100%)

kurn_18, range=46 (-70,30,-39)

Burynai_excavator (100%)

kurn_34, range=94 (21,86,-116)

lesser_charbone_skeleton (100%)

kurn_44, range=29 (-9,29,-116)

kurn_57, range=86 (19,-63,134)

greater_scalebone (100%)

kurn_68, range=57 (22,-17,-118)

kurn_71, range=83 (-41,-75,-107)

kurn_72, range=76 (-83,-48,-107)

Burynai_excavator (100%)

kurn_74, range=92 (38,70,-116)

kurn_90, range=92 (-75,-73,-30)

kurn_92, range=76 (11,-57,-39)

kurn_93, range=82 (29,-50,-39)

Burynai_excavator (100%)

kurn_113, range=88 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_117, range=92 (-31,-85,-30)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_132, range=66 (-8,70,-39)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_133, range=72 (-51,77,-39)

kurn_134, range=75 (-84,61,-39)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_136, range=81 (-84,-53,-30)

kurn_149, range=33 (-63,9,-30)

kurn_151, range=76 (-106,18,-39)

kurn_152, range=61 (-88,-11,-30)

kurn_153, range=36 (-62,-10,-30)

kurn_160, range=23 (-53,1,9)

greater_skeleton (100%)
greater_skeleton (100%)

kurn_166, range=36 (-50,39,104)

kurn_170, range=74 (22,-46,131)

kurn_183, range=78 (-62,-65,129)

greater_skeleton (100%)

kurn_184, range=76 (-85,61,106)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_185, range=21 (-39,-12,104)

kurn_186, range=47 (-58,-30,104)

kurn_187, range=47 (13,-13,104)

kurn_188, range=27 (-13,29,104)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_192, range=38 (0,31,-39)

fingered_skeleton (20%)
thick_boned_skeleton (80%)

kurn_193, range=23 (-35,31,-39)

thick_boned_skeleton (100%)

#Crackling_Bones_189490, range=72 (-31,80,-39)

#Crackling_Bones (25%)
lesser_charbone_skeleton (75%)