NPCs composing that spawngroup :

#Miner_Gribok (10%)

a_goblin_back_biter (30%)

a_goblin_flashdrowser (30%)

a_goblin_miner (30%)

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

nurga_82, range=32 (-2068,-1226,-173)

a_goblin_back_biter (50%)
a_goblin_life_drinker (50%)

nurga_84, range=31 (-2080,-1270,-173)

a_goblin_miner (50%)
a_goblin_miner (50%)

nurga_85, range=64 (-2063,-1298,-173)

va_nurga_508003, range=65 (-2059,-1297,-172)

va_nurga_508006, range=36 (-2065,-1224,-172)

va_nurga_508047, range=3 (-2099,-1245,-172)