Therefore Beecher had to depend wholly ohabrasives applied to the specimens with pieces of rubber.
As the shale is softer than the iron pyrites, the abrasives (carborundum, emery, or pumice) took away the matrix more quickly than the trilobite itself.
What is more, the artificial abrasives do not injure the lungs of the operatives like sandstone.
Before the introduction of the artificial abrasives fine grinding was mostly done by emery, which is an impure form of aluminum oxide found in nature.
Silica or quartz in its various crystalline forms constitutes over three-fourths of the tonnage of natural abrasives used in the United States.
The international movements and the consumption of bauxite are largely determined by the manufacture of aluminum, and to a lesser extent by the manufacture of abrasives and chemicals.
The United States produces about half of the aluminum of the world, and is the largest manufacturer of artificial abrasives and probably of aluminum chemicals.
While all of the various abrasives are represented in these imports, the United States is dependent on foreign sources for important parts of its needs only of emery and corundum, garnet, pumice, diamond dust and bort, and grinding pebbles.
Curtailment of imports during the war greatly stimulated the development of artificial abrasives and their substitution for emery and corundum.
In general, the geologic processes entering into the formation of abrasives cover almost the full range from primary igneous processes to surface alterations and sedimentation.
Other important abrasivesare emery and corundum, garnet, pumice, diamond dust and bort, and feldspar.
For the large number of abrasives produced from silica, outside of flint pebbles, domestic sources of production are ample.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "abrasives" in a variety of sentences. We hope that you will now be able to make sentences using this word.
