<P> The American Society of Civil Engineers has listed the building as a civil engineering landmark in recognition of its innovative construction, which made unusually extensive use of stone and was an early example of the use of structural iron . Both the interior and exterior are built with limestone from a quarry about 1 mile (1.6 km) from the site . Some interior columns were built from single pieces of stone, requiring massive wooden derricks to hoist them into place . Wrought iron, instead of wood, was used for the roof trusses to reduce the building's vulnerability to fire . </P> <P> Commercial, convict, and slave labor were used in the project . Fifteen enslaved Black men worked on carving the Capitol's limestone cellar from 1845 to 1847; Nashville stonemason A.G. Payne was paid $18 a month for their labor . It is believed to be "the most significant project where the (Tennessee) state government rented slave labor ." </P> <P> Strickland died five years before the building's completion and was entombed in its northeast wall . His son, F.W. Strickland, supervised completion of the structure . William Strickland also designed the St. Mary's Cathedral (located along the base of the capitol hill), as well as Downtown Presbyterian church located just a few blocks away from the state capitol . </P> <P> Samuel Dold Morgan (1798--1880), chairman of the State Building Commission overseeing the construction of the Tennessee State Capitol, is entombed in the southeast corner near the south entrance . </P>

Who is buried at the tennessee state capitol