![](/sites/default/files/styles/assets_detail/public/kiad7/SC-D92low.jpg.webp?itok=wrrFvHCl)
This interior view of the Mount Vernon Mill, Columbia, shows a beamer at work around 1960.
Courtesy of the South Carolina State Museum.
This interior view of the Mount Vernon Mill, Columbia, shows a beamer at work around 1960.
Courtesy of the South Carolina State Museum.