NPCs composing that spawngroup :

Burynai_excavator (50%)

Burynai_sapper (50%)

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

kurn_1, range=69 (135,-200,5)

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

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_5, range=44 (103,-223,-102)

greater_scalebone (100%)
greater_scalebone (100%)

kurn_7, range=66 (129,-217,-22)

kurn_8, range=63 (108,-244,4)

kurn_10, range=29 (87,-218,-102)

kurn_12, range=89 (50,-285,-97)

kurn_17, range=62 (60,-259,-99)

Burynai_excavator (50%)
lesser_charbone_skeleton (50%)

kurn_32, range=78 (128,-151,-23)

Burynai_Excavator (100%)

kurn_35, range=82 (80,-278,-99)

kurn_37, range=94 (146,-147,-104)

kurn_39, range=84 (76,-113,-105)

kurn_42, range=68 (1,-174,-109)

kurn_43, range=26 (89,-183,-102)

kurn_87, range=14 (71,-211,-24)

Burynai_burrower (50%)
Burynai_Excavator (50%)

kurn_89, range=85 (151,-190,-25)

kurn_141, range=95 (1,-128,-23)

Burynai_excavator (50%)
Burynai_Excavator (50%)

kurn_142, range=86 (-20,-208,-23)

Burynai_burrower (50%)
greater_scalebone (50%)

kurn_143, range=95 (-27,-177,-23)

kurn_144, range=13 (75,-187,-23)

kurn_145, range=45 (46,-156,-40)

Burynai_Excavator (50%)
greater_scalebone (50%)

kurn_146, range=77 (60,-120,-40)

kurn_157, range=68 (11,-157,-109)

kurn_161, range=69 (0,-221,90)

greater_scalebone (90%)
undead_crusader (10%)

kurn_163, range=78 (-10,-218,132)

kurn_165, range=38 (34,-219,132)

kurn_166, range=56 (23,-161,132)

kurn_168, range=75 (0,-160,132)

kurn_169, range=98 (0,-270,132)

kurn_175, range=36 (52,-163,124)

kurn_176, range=53 (63,-250,124)

kurn_178, range=54 (116,-175,124)

kurn_183, range=99 (41,-101,6)

greater_skeleton (100%)

kurn_276926, range=95 (-28,-218,134)

greater_scalebone (90%)
undead_crusader (10%)