No nuclear weapons even mini ones were used during US operations in Iraq. The US did use new fuel air explosive (thermobaric) bunker bombs that are designed to take out underground structures and buildings. These weapons were designed impart damage to nuclear facilities. Though they have been mostly used to attack Taliban targets in Afghanistan.
Mini-nuclear weapons were an early idea of the Bush Administration to take out such nuclear and deep bunker facilities. The idea received so much bad press in America and internationally the program the last time I heard was at minimum funding or canceled all together. Too design a nuclear weapon to detonate at around .01 kilotons is extremely difficult and expensive from what I have read in articles from Popular Mechanics and others.
Mini-nuclear weapons were an early idea of the Bush Administration to take out such nuclear and deep bunker facilities. The idea received so much bad press in America and internationally the program the last time I heard was at minimum funding or canceled all together. Too design a nuclear weapon to detonate at around .01 kilotons is extremely difficult and expensive from what I have read in articles from Popular Mechanics and others.