a prueba de bombas

adj. shellproof, bombproof, built to withstand bombs

(adj.) = ruggedised [ruggedized, -USA], bomb-proof
Ex: The article 'Where no drive has gone before: ruggedized CD-ROM drives' provides examples of conditions where CD-ROM drives need to be particularly rugged (severe industrial conditions, severe shock and vibration conditions, and severe military conditions). Ex: Who else is going to flip the burgers, clean the resistant bomb-proof windows of the glitzy mile-high skyscrapers -- also take out the garbage, wash the dishes, park the cars, sweep up the papers in the parks?.