Mr. Ward's experience covered the world and spectrum of metals, minerals and ores ranging from A to Z, (Antimony to Zinc and Australia to Zambia).
If pure chromium is desired, iron must be removed from the ore or from an intermediate ferrochromium product by hydrometallurgical techniques (see below).
The project, about three miles from the existing mine in the northern desert, will provide higher-grade ores from an open pit.
But Iran's successful processing of uranium ore from a domestically mined source, which it has been working on for years, suggested the Iranians had found a way to bypass United Nations sanctions that ban them from importing raw uranium.
Fears rose for the safety of miners extracting silver ore from a maze of tunnels inside Cerro Rico, near the town of Potosí, after a sinkhole widened near the mountain's summit.
Less a grand theorist than a scholar, he was a wizard of "esoteric" reading who extracted rich ore from a spectrum of thinkers — the ancient Greeks but also Jewish and Islamic scholars, and secular moderns such as Thomas Hobbes, John Locke, and Max Weber.
The Environmental Protection Agency did not adequately respond to evidence that asbestos-contaminated ore from a Montana mine operated by W. R. Grace & Company posed a health hazard, the agency's inspector general said yesterday.
It was the natural accoutrement for a man who, without one, resembled an amiable wizard kitted out by a Houston department store.With a little help from friends, he dug 80 kilos of iron ore from a convenient field and built a kiln in the back garden.
The refinery will process concentrated rare earth ore from a Lynas mine deep in the desert in western Australia, using heat and thousands of tons a year of powerful sulfuric acid to separate the valuable minerals from dirt and radioactive contaminants.
The International Atomic Energy Agency did endorse safety procedures set out by Lynas for operations like the transport of the slightly radioactive ore from a mine in the west Australian desert by way of Singapore to the Malaysian port of Kuantan, followed by a short truck trip to the Gebeng industrial district.
