Crews using a jack hammer for wall repairs in the Eisenhower Johnson Memorial Tunnel
https://www.codot.gov/news/2022/september/assets/ejmt-jack-hammer-wall-work-1.png/view
https://www.codot.gov/news/2022/september/assets/ejmt-jack-hammer-wall-work-1.png/@@download/image/EJMT Jack Hammer Wall Work.png
Crews using a jack hammer for wall repairs in the Eisenhower Johnson Memorial Tunnel