By this point it had burned through most of its fuel. The books in the northeast stacks were crumbles, ashes, powder, and charred pages heaped a foot deep. The last flags of fire fluttered, seethed, settled, and finally died. It had required 1,400 tanks of air; 13,440 square feet of salvage covers; two acres of plastic sheeting; ninety bales of sawdust; more than three million gallons of water; and the majority of the city of Los Angeles’s firefighting personnel and equipment, but the library fire was at last declared extinguished, “a knockdown,” at six thirty P.M. on April 29, 1986. It had raged for seven hours and thirty-eight minutes.