Bismuth is generally mined as a by-product of lead, tin, copper, tungsten, silver ... A flat rectangular piece of metal which has been refined by electrolysis or electrowinning. ... The ferro-alloy is more easily produced from the ore than the pure metal and may also be ... Mostly used in steel, e.g. merchant bar, merchant pig iron.
... measurement, it is necessary to have a flat, uncontaminated sample surface. Using the ... Accelerator: copper (for carbon), tungsten (for sulfur) ... Accelerator: tungsten plus pure iron ... Compressed air: 4-6 bar (60 – 90 psi).
This is how it is found, as nuggets of pure metal. ... Uncle had a variety of tungsten bars in his office—some he used as ... was forced to sit in classes, to take notes and exams, to use textbooks that were flat, impersonal, deadly.
It's not the first pure-electric Audi, of course. ... cast-iron discs with a tungsten carbide coating standard on the RS), and ... The steering is fast and precise, but not particularly engaging, much like in any other modern fast Audi bar the R8. ... it's a rather long and flat space with a small bootlid, not a full hatch.