Human Earth-Borers Really Dig Tunnels
“Tunneling on railroads is being pushed to an extreme. Even where a detour would avoid a bore, engineers seem to have a peculiar gratification in piercing the earth.
Continue reading … https://ift.tt/3gWpXx1
Human Earth-Borers Really Dig Tunnels
“Tunneling on railroads is being pushed to an extreme. Even where a detour would avoid a bore, engineers seem to have a peculiar gratification in piercing the earth.
Continue reading … https://ift.tt/3gWpXx1