About the monument itself:
From the top of the flagpole to the bottom of the base is nearly 40 feet.
A 48 star American flag from the top of the flagpole making it historically correct
The sculptor is Joseph Petrovics of Sculpture House Castings NYC
Rocks from Mt. Suribachi have been placed at the feet of the flag raisers
Sand from the invasion beach has been incorporated into the concrete base of the monument.

Info: National Iwo Jima Memorial Monument pamphlet