- Minerals for which the United States must depend almost entirely on other countries:
| Cobalt. |
|---|
| Nickel. |
| Platinum and metals of the platinum group. |
| Tin. |
- Minerals for which the United States will depend on foreign sources for a considerable fraction of the supply:
| Antimony. |
|---|
| Asbestos. |
| Ball clay and kaolin. |
| Chalk. |
| Chromite. |
| Corundum. |
| Diamond dust and bort. |
| Garnet. |
| Graphite. |
| Grinding pebbles. |
| Manganese. |
| Mercury. |
| Mica. |
| Monazite. |
| Naxos emery. |
| Nitrates. |
| Petroleum (see below). |
| Potash. |
| Precious stones. |
| Pumice. |
| Tungsten. |
| Vanadium. |
| Zirconium. |