The Institute plant had a small spill a few days ago. The chemical released Sunday was liquid cesium sulfate, and it posed no danger to the public, said Larry Kilgore, a shift supervisor at the plant.

Avalon Advanced Materials (TSX: AVL) announced that it has re-activated its Lilypad cesium-tantalum-lithium project in Ontario due to increasing demand for cesium. “Cesium is a rare element in ...

When the cesium second was defined in 1967, it was based on a measurement of the number of cycles of the radiation from a particular cesium-133 transition with reference to the second commonly ...