NPCs composing that spawngroup :

a_goblin_life_drinker (50%)

a_goblin_miner (50%)

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

nurga_35, range=77 (-1958,-931,-173)

a_goblin_back_biter (50%)
a_goblin_spirit_weaver (50%)

nurga_79, range=69 (-2099,-956,-173)

a_goblin_back_biter (50%)
a_goblin_miner (50%)

nurga_80, range=36 (-2066,-951,-173)

nurga_81, range=33 (-2061,-971,-173)

a_goblin_back_biter (50%)
a_goblin_flame_douser (50%)

va_nurga_508003, range=92 (-2118,-930,-220)