@@ -81,6 +81,7 @@ enum IndustyBehaviour {
INDUSTRYBEH_AIRPLANE_ATTACKS = 1 << 11, ///< can be exploded by a military airplane (oil refinery)
INDUSTRYBEH_CHOPPER_ATTACKS = 1 << 12, ///< can be exploded by a military helicopter (factory)
INDUSTRYBEH_CAN_SUBSIDENCE = 1 << 13, ///< can cause a subsidence (coal mine, shaft that collapses)
INDUSTRYBEH_CANCLOSE_LASTINSTANCE = 1 << 17, ///< Allow closing down the last instance of this type
};