Isotopes of barium Isotopes of barium Naturally occurring barium (Ba) is a mix of six stable isotopes and one very long-lived radioactive primordial isotope, barium-130, recently identified as being unstable by geochemical means (from analysis of the presence of its daughter xenon-130 in rocks). This nuclide decays by double-electron capture (absorbing two electrons and emitting two neutrinos); with a half-life of (0.5–2.7)×10 years (about 10 times the age of the universe). There are a total of thirty-three known radioisotopes in addition to Ba, but most of these are highly radioactive with half-lives in the several millisecond to several minute range. The only notable
Stieff Silver years around the start of the 20th century, before starting a silver business of his own. The complete history of The Schofield Company can be found on the website. Schofield was also known as Herr-Schofield from 1905-1927. The factory was again expanded; doubled in size in 1971 to allow for the booming pewter manufacturing business. Pewter became the major business of Stieff as sales of Sterling Silver waned since the 1960s. Sterling Silver hollow ware was made at Stieff until 1999, but pewter became the star of the company in the 1970s and 1980s. Stieff was the official maker of