NPCs composing that spawngroup :

Burynai_burrower (33%)

Burynai_Excavator (33%)

Burynai_Excavator (34%)

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

kurn_3, range=58 (-73,-311,-23)

kurn_7, range=83 (-112,-379,-22)

kurn_8, range=74 (-20,-280,-21)

kurn_41, range=97 (48,-299,-97)

Burynai_sapper (100%)

kurn_82, range=77 (-41,-276,-23)

kurn_83, range=49 (-58,-310,-23)

kurn_84, range=98 (-118,-304,-23)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_137, range=82 (-103,-310,-22)

kurn_145, range=44 (-17,-394,-22)

Burynai_Excavator (50%)
greater_scalebone (50%)

kurn_169, range=89 (0,-270,132)

kurn_177, range=60 (14,-391,-21)

kurn_181, range=84 (-71,-277,4)