| Sodium is also used as a chemical reducing agent in producing titanium, zirconium, niobium, and tantalum from their fused salts. |
| High voltage and low amperage were used to increase the contrast between the dense tantalum markers and the bone. |
| Because of the high solubilities in niobium and tantalum, these embrittling contaminants normally do not present problems in fabrication. |
| The metal can be, for example, titanium, tantalum, chromium, aluminium or tungsten. |
| His recovery of the rare and vital ores of tantalum, lithium, and beryllium greatly aided the War Production Board. |
| The refractory metals include niobium, tantalum, molybdenum, tungsten, and rhenium. |
