In Old St. Pat's nearly a tenth of a gram of PyrE was exposed in Fourmyle's laboratory. The rest was sealed in its Inert Lead Isotope safe, protected from accidental and intentional psychokinetic ignition. The blinding blast of energy generated from that tenth of a gram blew out the walls and split the floors as though an internal earthquake had convulsed the building. The buttresses held the pillars for a split second and then crumbled. Down came towers, spires, pillars, buttresses, and roof in a thundering avalanche to hesitate above the yawning crater of the floor in a tangled, precarious equilibrium. A breath of wind, a distant vibration, and the collapse would continue until the crater was filled solid with pulverized rubble.