Iran has for years anticipated this situation and for that reason expecting the eventual bunker busting bombing of its nuke research labs and development facilities, have built them underground, so when they are struck the contamination will kept for the most part under the great depths of earth, concrete and rubble. This demonstrates that although the regime is wasting funds on nuke weapons development, the regime is also looking out for the ecological aspects of the nation and its populace. The anti-Iranian strikes will need to avoid striking the above ground facilities as much as possible.