Health concerns about humidifiers have led several manufacturers to refine older technologies to try to reduce the bacteria and mineral dust they discharge.

The new wicking humidifiers are supposed to reduce bacteria, molds and mineral dust, their makers say.

Use distilled or demineralized water in the humidifier to reduce deposits and the release of mineral dust.

The intumescence disappears in the presence of finely divided mineral dust, whereby the waterglass becomes a mere matrix.

The added materials, which may consist of compost, peat, sand, mineral dust, or manure, among others, are mixed with the soil to the preferred depth.

The Sahara is the major source on Earth of mineral dust (60-200 millions of tons per year).

Higher than average values of African mineral dust during the most active portion of the hurricane season could have also suppressed tropical cyclone activity.

He looked as if he had just come off duty from construction mining, with his arms and face covered by stains of dark mineral dust.

Tougher substances, such as concrete, may also be mechanically ground down and reduced to finely divided mineral dust.

This phase is associated with high rates of wind-blown mineral dust, found in marine cores that come from the north tropical Atlantic.