NPCs composing that spawngroup :

Burynai_sapper (100%)

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

kurn_1, range=44 (135,-200,5)

kurn_2, range=58 (124,-191,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_5, range=68 (103,-223,-102)

greater_scalebone (100%)

kurn_7, range=43 (129,-217,-22)

kurn_8, range=66 (108,-244,4)

kurn_10, range=85 (87,-218,-102)

kurn_30, range=78 (201,-152,-22)

kurn_31, range=92 (202,-137,-22)

kurn_32, range=86 (128,-151,-23)

Burynai_Excavator (100%)

kurn_36, range=27 (199,-232,-102)

kurn_37, range=82 (146,-147,-104)

kurn_38, range=88 (172,-137,-104)

kurn_43, range=93 (89,-183,-102)

kurn_81, range=55 (174,-280,-23)

kurn_89, range=41 (151,-190,-25)

kurn_96, range=59 (192,-281,-22)

Burynai_Excavator (50%)
greater_skeleton (50%)

kurn_165, range=70 (106,-200,124)

kurn_178, range=75 (116,-175,124)