1. KorbenDallas

    1863: Cinder Block aka Hollow Construction Block

    Per Encyclopedia.COM, the narrative compliant history of the Hollow Blocks sounds like this: The first hollow concrete block was designed in 1890 by Harmon S. Palmer in the United States. After 10 years of experimenting, Palmer patented the design in 1900. Palmer's blocks were 8 in (20.3 cm) by...