MLK Parade Bomber used Rat Poison, shaped Charge, and a Rocket Motor igniter
The story below indicates that the white supremacist MLK parade bomb plotter used a crude device that included a pipe welded to a plate to shape & direct the charge, rat poison to exacerbate any injuries it inflicted, and a rocket motor to ignite the gunpowder charge. The bomb described appears equivalent to the old types of canister munitions fired from cannons to stop infantry charges in the 1800’s but with Warfarin rat poison added.
I would speculate that this hate monger was going to wait until the moment when he could get maximum possible damage to detonate this bomb.
A “joint intelligence bulletin” issued the day federal agents raided the Colville home of Kevin W. Harpham confirms that the bomb planted along the planned route of Spokane’s annual Martin Luther King Jr. Day march was indeed laced with rat poison and may have included a rocket motor igniter.
The bomb consisted of a steel pipe with a hole drilled at its base. “The pipe was welded to a roughly cut steel plate,” according to the report, which was posted to a research website Wednesday. The explosive charge was described as black powder, which was contained in a plastic bag.
“While not yet confirmed, the initiator appears similar to a rocket motor igniter,” the report states. “An RMI was used in a crude IED carried by a lone individual who took hostages and threatened employees in the Discovery Channel Building” in Silver Spring, Md., on Sept. 1.