1.   The bomb blast fractured the ventilating system and spewed dust particles along the system throughout the hospital.

2.   Federal regulators have blamed a malfunction in recalled Cadet heaters for hundreds of fires and other safety problems, including sparking and spewing molten particles, around the Northwest.

3.   An anti-nuclear group warned the fire could burn radioactive soil and spew contaminated particles into the air.

4.   He spent months measuring radiation, sometimes standing on the roof as the reactor spewed deadly particles.