Calamine (mineral) enough was known of metallic zinc to make brass solder directly by combining copper and spelter (zinc ingots). In 1738 a patent was granted to William Champion, a Bristol brass founder, for the large-scale reduction of calamine to produce spelter. In 1684 a paper presented to the Royal Society touched on the medicinal and veterinary properties of the compound when in finely powdered form. Calamine (mineral) Calamine is a historic name for an ore of zinc. The name "calamine" was derived from "lapis calaminaris", a Latin corruption of Greek "cadmia (καδμία)", the old name for zinc ores in general. The
The Big Ore The Big Ore The Big Ore () is a 1964 drama film directed by Vasily Ordynsky and based on the novel by Georgi Vladimov. Viktor Pronin (Yevgeni Urbansky) returned from the army to the bride (Svetlana Zhgun), and she – the other. Then Victor went to "great" Kursk ore, where the work is in full swing – all live in anticipation of the first car of ore. To check Pronyakin, Brigadier (Vsevolod Sanaev) gives him beaten MAZ: mend – a long time came. The guy got in the "hostel" to repair the car and began to put one after the