Ore

Examples

• In mining there are stamp mills, ore crushers, separators, concentrators, and amalgamators. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• The wanderings led to the old ore-milling plant at Edison, now practically a mass of deserted buildings all going to decay. Frank Lewis Dyer. Edison, His Life and Inventions.
• So I and the vice-president of the company, Mr. Mallory, crowded through the manhole to see why the ore would not come down. Frank Lewis Dyer. Edison, His Life and Inventions.
• He lectured bef ore the Dublin Society in 1810, and again in the following year; on the occasion of his second visit receiving the degree of LL . Walter Libby. An Introduction to the History of Science.
• At another time, I had a briquetting machine for briquetting iron ore. Frank Lewis Dyer. Edison, His Life and Inventions.
• During the progress of the ore-milling work at Edison, it became desirable to carry on a certain operation by some special machinery. Frank Lewis Dyer. Edison, His Life and Inventions.
• Charcoal in the furnace being well ignited, ore and charcoal resting on the tray are alternately raked into the furnace. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• It was his opinion that it was cheaper to quarry and concentrate lean ore in a big way than to attempt to mine, under adverse circumstances, limited bodies of high-grade ore. Frank Lewis Dyer. Edison, His Life and Inventions.
• The coal, coke, ore, etc. Various. The Wonder Book of Knowledge.
• Fire melts ore and allows of the forging of iron, as in the blacksmith's shop, and of the fashioning of innumerable objects serviceable to man. Bertha M. Clark. General Science.
• In the story of the ore-milling work, it has been noted that the plant was shut down owing to the competition of the cheap ore from the Mesaba Range. Frank Lewis Dyer. Edison, His Life and Inventions.
• Many forms of ore washing machines have been invented to treat the ore after it has been reduced to powder. William Henry Doolittle. Inventions in the Century.
• In India, where zinc and copper ore occur together, brass (which is an alloy of the two metals) was similarly hit upon. H. G. Wells. The Outline of History_Being a Plain History of Life and Mankind.
• This ore could be excavated very cheaply by means of improved mining facilities, and transported at low cost to lake ports. Frank Lewis Dyer. Edison, His Life and Inventions.
• If the earth is at present magnetical, in virtue of the masses of iron ore contained in it, might not some ages pass before it had magnetic polarity? Benjamin Franklin. Memoirs of Benjamin Franklin.
• Valuable metallic ores, such as those of gold, platinum, tin, copper and iron, often occur in the form of sand or mixed with that substance. Various. The Wonder Book of Knowledge.
• This process is best adapted to what are known as free milling or porous ores, where the gold is free and very fine and is attracted readily by mercury. William Henry Doolittle. Inventions in the Century.
• In the treatment of iron ores, and especially those of low grade, the magnetic concentrator is an interesting and striking departure. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• Some chemical and other processes for reducing ores have been referred to in the Chapter on Metallurgy. William Henry Doolittle. Inventions in the Century.
• For many years it had been a much-discussed question how to make these ores available for transportation to distant furnaces. Frank Lewis Dyer. Edison, His Life and Inventions.
• Many attempts had been made in by-gone days to concentrate the iron in such ores by water processes, but with only a partial degree of success. Frank Lewis Dyer. Edison, His Life and Inventions.
• By the cyanide process, in which cyanide of potassium is used as a solvent for the gold, low-grade ores can be profitably worked. Various. The Wonder Book of Knowledge.
• Granite is not rich in mineral ores. Various. The Wonder Book of Knowledge.
• Cur ie examined at the same time the salts of uranium and a number of uranium ores. Walter Libby. An Introduction to the History of Science.
• The try everything spirit of Edison's method is well illustrated in this early period by a series of about sixteen hundred resistance tests of various ores, minerals, earths, etc. Frank Lewis Dyer. Edison, His Life and Inventions.
• The chief of machines with _ores_ is the _ore mill_, which not only breaks up the ore but grinds or pulverises it. William Henry Doolittle. Inventions in the Century.
• This crusher consists of two ponderous upright jaws, one fixed and the other movable, between which the stones or ores to be crushed are fed. William Henry Doolittle. Inventions in the Century.
• Iron, which seems to have been first reduced from its ores by the Hittites, was, to begin with, a rare and much-desired substance. H. G. Wells. The Outline of History_Being a Plain History of Life and Mankind.
• Seventeen different methods and devices for separating magnetic ores. Frank Lewis Dyer. Edison, His Life and Inventions.
• As to gold, silver and lead, they doubtless were found first in their native state and mixed with other ores and were hammered into the desired shapes with the hardest stone implements. William Henry Doolittle. Inventions in the Century.

Checker: Prudence