Walking Around Carrie Furnaces Part 4 - The Ore Bridge
18:30
Mise à jour de décembre sur le projet de laminoir Tod McDonald
10:56
Walking Around the Carrie Blast Furnaces Part 1
27:23
History of the Pennsylvania Railroad | Vintage Promotional Film Series
25:14
"Big Rock Crusher Machine: A Giant in Action"Big Rock Crushing: A Powerful Process"#stonecrusher
4:22
Mary Artie Brannon- Making big waves on the Ohio River - Crew Member gives a big flex!
3:26:16
Incredible Experience Operating Of Project Filling Land Dozer Leveling & Dump Truck Unloading Sand
30:18
Pittsburgh's Rolling Ingot Steam Locomotives
16:36