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English words and Examples of Usage

use "refining" in a sentence


Police raided an illegal laboratory in a house in Seattle today where they confiscated equipment used for refining heroin.

John Rockefeller was 19 years old when he started out in the oil business, by the age of 40 he had built a monopoly and controlled 90 percent of the world's refining.

In Bahrain, petroleum production and refining account for about 60% of export receipts.

We have been working for days refining our plans to prepare them for presentation to the board.

A scientist studies nature by refining old models or creating new models.

A scientist studies nature by refining old models or creating new models.

To produce $1 billion of cocaine only requires about $3 million in refining chemicals and coca leaves.

A number of years ago the author devised a method for refining silver bullion by sulphuric acid, in which iron was substituted for copper as precipitant of silver, the principal feature being the separation of pure crystals of silver sulphate.

The process has been extensively worked in San Francisco and in Germany in refining bullion to the amount of more than a hundred million dollars' worth of silver.

Thus, in refining ordinary silver "dore," four parts of acid are used to one part of bullion.

In the diagram A A represent two refining pots, 4 ft.

In private refineries, where refining is carried on continuously, the settling may take place in an intermediate vessel, and A A be at once recharged.

The volume of fresh commercial acid necessary for another dissolving operation, say 800 pounds, more or less, for refining 800 pounds of bullion in A A, is lifted from some other receptacle into B in the same manner.

, and of saturating by oxidized copper, generally in a very incomplete manner, the large amount of free acid left from the refining by the usual process.

Another advantage the author merely mentions, namely, the easier condensation of the sulphurous fumes in refineries situated in cities, because the larger amount of acid available for dissolving greatly facilitates working and makes the usual frequent admission of air into the refining pot for the purpose of stirring and testing unnecessary.

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