NPCs composing that spawngroup :

Burynai_excavator (50%)

Burynai_sapper (50%)

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

kurn_1, range=86 (-53,144,4)

greater_skeleton (100%)

kurn_9, range=56 (0,13,3)

scalebone_skeleton (100%)

kurn_18, range=73 (-70,30,-39)

Burynai_excavator (100%)

kurn_34, range=34 (21,86,-116)

lesser_charbone_skeleton (100%)

kurn_44, range=41 (-9,29,-116)

kurn_68, range=92 (22,-17,-118)

kurn_74, range=46 (38,70,-116)

kurn_91, range=65 (-30,8,-39)

kurn_119, range=97 (-37,163,-49)

Burynai_excavator (50%)
Burynai_Excavator (50%)

kurn_120, range=77 (-9,147,-49)

kurn_133, range=43 (-51,77,-39)

kurn_134, range=76 (-84,61,-39)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_149, range=82 (-63,9,-30)

kurn_153, range=96 (-62,-10,-30)

kurn_160, range=81 (-53,1,9)

greater_skeleton (100%)
greater_skeleton (100%)

kurn_166, range=52 (-50,39,104)

kurn_183, range=40 (13,104,6)

greater_skeleton (100%)

kurn_184, range=77 (-85,61,106)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_185, range=87 (-39,-12,104)

kurn_186, range=63 (29,19,104)

kurn_187, range=85 (13,-13,104)

kurn_188, range=41 (-13,29,104)

greater_skeleton (50%)
scalebone_skeleton (50%)

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

fingered_skeleton (20%)
thick_boned_skeleton (80%)

kurn_193, range=46 (-35,31,-39)

thick_boned_skeleton (100%)

#Crackling_Bones_189490, range=25 (-31,80,-39)

#Crackling_Bones (25%)
lesser_charbone_skeleton (75%)