The fineness of the ash in this case is unusual, says Thorvaldur Thordarson, an Icelandic volcanologist.

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The Vellus Aureum wool fibers must measure a mere 13.9 microns (closer to the fineness of a cobweb).

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If nothing else, does anyone at the Fed know the quality and fineness of the gold at Fort Knox?

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But Gaddis has written with care and elegance, and he has produced a biography whose fineness is worthy of its subject.

NEWYORKER: Getting Real

Two days earlier, it had scooped some sand from a drift, sieved it to a fineness of less than a hundred and fifty microns, and dropped a portion half the size of a baby aspirin into a funnel on its back.

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