�y��vlog

What they found was a silvery substance, which the technicians later told investigators was “consistent with flash powder and aluminum powder and maybe potassium chlorate.”

The masks release chemicals like barium peroxide, sodium chlorate, and potassium chlorate.

“This is a mixture of potassium chlorate and sugar,” Miss Riley said.

The records showed he bought potassium chlorate, aluminum metal and other homemade bomb ingredients, purchases that continued after Wray’s death had made news, they said.

Named after their creators, the Brock contained potassium chlorate, a flammable liquid, while the Buckingham was filled with phosphorous to act as an incendiary.