A bomb consisting of one hundred pounds of dynamite packed with five hundred pounds of cast-iron slugs violently vomited red-hot shrapnel and destruction in every direction. A number of passers-by were instantly vaporized by the extreme heat and pressure. The blast sent a nearby automobile careening through the air as countless jagged iron fragments ripped through the crowd.
Thirty people had died in the first few moments, and ten were mortally wounded. Some 300 other men, women, and children were injured.