Just as the world responded from near and far to assist Oklahoma City in the aftermath of the bombing, the Oklahoma City National Memorial searched near and far for the finest materials possible with which to build.

From the street, the Memorial’s most striking features are the Gates of Time. The gates are clad with a “naval” and “yellow” bronze. The panels were milled in Japan, due to the large, singlepanel sizes required. The panels were then shipped to New Jersey where they were finished, and eventually to Oklahoma City for installation, which occurred in August 1999.

The black granite within both Gates of Time and on the Reflecting Pool surface was quarried in Quebec, Canada. The granite was installed between October 1999 and March 2000.

The pathway flagstones are from West Central Arkansas and were set in place from September 1999 to April 2000.

The large natural sandstone benches positioned around the Memorial grounds are from LeFlore County in Eastern Oklahoma.

The oversized in-ground chalkboards in the Children’s Area were quarried and shipped from Vermont.

Netlon, a reinforced lawn product, was shipped from its manufacturer in London, England.

The Lobolly Pine Trees were selected from a tree plantation in nearby McLoud, Oklahoma.

The Oklahoma Redbud, Amur Maple, Chinese Pistache and Bosque Elm trees were grown in Oklahoma, Texas and
Georgia.

The Memorial Chairs, conceptualized by Hans & Torrey Butzer in honor of the 168 people who were killed, were fabricated by components in different parts of the country. The glass bases were cast at John Lewis Glass Studio in Oakland, California. The bronze backs were cast at A.R.K. Ramos in Oklahoma City. Both components were brought together (and the chairs’ mechanical and structural elements were designed and coordinated) by Vespex, LLC of Kingston, New Hampshire. Vespex also coordinated installation of the chairs during March/April 2000.

The hand-painted tiles were sent by children from all over the country. The designers were able to include a sampling of those tiles on the wall in the Children’s Area.

The Memorial’s permanent lawn, installed in May 2000, is a zoysia sod.

The granite panels on which the Survivors’ names are etched were salvaged from the Murrah Building. The granite stones that make up the granite path around the Field of Empty Chairs are from the plaza.