Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
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gist. Radioactivity surveys are useful in detecting deposits of radioactive minerals and of monazite, which is mined for its nonradioactive rare-earth elements and for radioactive thorium. Monazite occurs in Virginia, but commercial deposits have not been
95.9%