| It was the first commercial manufacturer of plutonium and americium neutron sources for oil well, logging and other applications. |
| Kept secret until after the war, they were respectively called americium and curium. |
| Internal contamination with plutonium, americium, or curium can occur through a variety of routes including ingestion, inhalation, or direct contact through wounds. |
| Metallic californium has been prepared and is structurally similar to metallic americium, curium, berkelium, and most lanthanoid metals. |
| Release of plutonium, americium and curium could occur from laboratory or industrial accidents. |
| Some like americium, iodine 129 or cesium 135 can remain several hundred millenia. |
