Barium sulfate Barium sulfate Barium sulfate (or sulphate) is the inorganic compound with the chemical formula BaSO. It is a white crystalline solid that is odorless and insoluble in water. It occurs as the mineral barite, which is the main commercial source of barium and materials prepared from it. The white opaque appearance and its high density are exploited in its main applications. About 80% of the world's barium sulfate production, mostly purified mineral, is consumed as a component of oil well drilling fluid. It increases the density of the fluid, increasing the hydrostatic pressure in the well and reducing the chance
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