code/__DEFINES/dcs/signals/signals_mining.dm

COMSIG_GOLIATH_TENTACLED_GRABBED	Fired by a mob which has been grabbed by a goliath
COMSIG_GOLIATH_TENTACLE_RETRACTING	Fired by a goliath tentacle which is returning to the earth
COMSIG_BRIMDUST_EXPLOSION	Fired by a mob which has triggered a brimdust explosion from itself (not the mobs that get hit)

Define Details

Fired by a mob which has triggered a brimdust explosion from itself (not the mobs that get hit)

Fired by a mob which has been grabbed by a goliath

Fired by a goliath tentacle which is returning to the earth