mineral dust

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mineral dust

A very finely divided mineral product, the greatest bulk of which will pass through a 74-micron (No. 200) sieve; the most common such material is pulverized limestone.
References in classic literature ?
A cottontail rabbit had scuttled across the road, and a tiny dust cloud lingered like smoke, marking the way of his flight.
When X-rays encounter grains of dust in interstellar space they can be deflected, and if the dust clouds are dense they can scatter a noticeable fraction of the X-rays away from their original trajectory, putting them on a triangular path.
By comparing the Chandra data to prior images of dust clouds detected by the Mopra radio telescope in Australia, the researchers determined that each ring was created by the X-ray reflections off a different dust cloud.
Dust clouds on the moons of Jupiter and Saturn have previously been identified, but this is the first time a dust cloud has been confirmed on the moon.
Minimum Ignition Energy (MIE) for dust clouds and dust layers
Often, consumers put a plastic bag around their vacuum when emptying it to prevent dust clouds and spills," said Niklas Melin, the company's product marketing manager.
That may sound like a lot, but remember that these dust clouds originate front layers on the floor and other surfaces that get lifted up into suspension.
If the test is positive, then the explosive index (Kst) and the maximum pressure rise (Pmax) of the dust should be determined by ASTM E 1226-12a, Standard Test Method for Explosibility of Dust Clouds.
PORT TALBOT steel works owners Tata Steel have been issued with an enforcement notice after weeks of complaints from local residents about dust clouds.
Summary: The dust clouds will reappear in the country today, and temperatures are expected to fall as unstable weather conditions continue this weekend.
FORCAST offered astronomers the ability to see the CNR and QC regions and other exotic cosmic features whose light is obscured by water vapor in Earth's atmosphere and interstellar dust clouds in the mid-plane of the Milky Way.
Scientists are becoming increasingly concerned about dust clouds as they harmfully pollute the air with particles that lead to breathing and other health problems.