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...last week Henderson's Office of Price Administration announced a new ceiling: 8.25? for prime Western, highest published price for zinc (with brief exceptions) since World War I. The extra penny, said OPA, would bring out more low-grade ore, help hard-pressed mine owners in the Tri-State zinc region (Missouri/Oklahoma, Kansas) pay wages that would keep miners from shifting to other jobs. One estimate of the likely production boost...
...rattling good yarn full of the healthy animal instincts, presented in a very colorful fashion. As for the rest of the program, a fair Information Please and a not-so-good March of Time appear with the Grade Z picture "Forced Landing." If you're in the mood, "Aloma of the South Seas" is good entertainment, but cut the rest...
...abundant manganese deposits, but nearly all of them are low-grade and many of them contain the mineral in the wrong form for easy separation: manganese dioxide. But two new processes developed by the U.S. Bureau of Mines are on the point of making low-grade manganese oxide ore a useful citizen of steel metallurgy. Last week in three new pilot plants at Boulder City, Nev., where oxide ore beds adjoin Boulder Dam's cheap electricity, manganese's first citizenship papers were being signed...
...manganese carbonate ores, such as Montana's, assay a mere 20-27% (as against 50% for imported ores), but they are easy enough to concentrate by methods developed soon after World War I. But low-grade oxide ores, like Nevada's, evaded all ordinary flotation methods until the Bureau of Mines men hit on a new scheme: flotation in reverse with a new solvent...
Bureau of Mines officials last week felt that their new reverse flotation and electrolytic processes promised to remove manganese from the list of U.S. wartime worries. But, they observed, only months of pilot plant operations will show whether low-grade U.S. manganese ores can compete in a peaceful, free-trading world with foreign ores which need neither concentrating nor refining...