Feldspar as an abrasive is used mainly in scouring soaps and window-wash.
It had every appearance of having been tampered with; sand or some other abrasive put into it.
It has an extensive use as an abrasive for grinding and polishing.
No doubt its only use was as an abrasive, after being pounded fine.
Certainly this was no place to set down the full weight of Astro nor to protect the crew and equipment from abrasive dust.
The abrasive generally used is a paste made of medium or fine emery and lard oil or kerosene.
The abrasive trade in general uses low-silica high-iron bauxites.
Imports of abrasive materials into the United States have about one-third of the value of those locally produced.
Corundum as an abrasive is the mineral of this name—made up of anhydrous aluminum oxide.
It is often closely associated with volcanic ash, which is also used for abrasive purposes.
