NSA - 672
Rocks to Roads
active, Most Current
| Organization: | NSA |
| Status: | active |
scope:
Aggregates and the Interstate Highway System Where would our country be without aggregates? Stuck in the mud! This 11- minute video chronicles the development of our modern interstate highway system over the past 50 years. See how stone, sand and gravel have literally shaped our foundation and economy through the construction of roads, bridges, buildings and many other areas of our nation's infrastructure.
Document History
672
Rocks to Roads
Aggregates and the Interstate Highway System Where would our country be without aggregates? Stuck in the mud! This 11- minute video chronicles the development of our modern interstate highway system...