User blog comment:Geomax/Space Marines vs Forerunner Warrior-Servants Rematch/@comment-5138827-20130105022920/@comment-5138827-20130106041506

Oh and I have a quote on Space Marine durability now :

'''""Scipio was flattened by an immense blast wave, his helmet lenses dampening the magnesium-bright afterflare. Battle Brothers from Castor's squad were flung outward from the terrible explosion. A fat mushroom cloud billowed up in its wake, and the Space Marines crashed down to the earth hard, swathed in dust and debris. Castor was immolated, his ragged body thrown up and buoyed by the blast wave, before spiralling down in a broken heap. "Another for Apothecary Venatio" thought Scipio as he watched Castor's squad climb to their feet."" '''

"Assault on Blackreach"

Though the Space Marine hit by the tactical nuke died, all of his squad mates survived.