Sentence Examples with the word Rock Salt

These form the principal natural sources of sodium compounds - the chloride as rock salt and in sea-water being of, such predominating importance as quite to outweigh all the others.

From 1880 to 1885 the first brines were obtained in Wyoming and Genesee counties by boring deep wells into beds of rock salt, and in 1885 the mining of the extensive deposits of rock salt in Livingston county was begun.

It is celebrated for the extensive deposit of rock salt in its vicinity.

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The deposit of rock salt on Petite Anse Island, in the coast swamp region, has been extensively worked since its discovery during the Civil War.