The ore is also worked for gold.
The value of the ore reduced annually is about $10,000,000.
They need our ore more than we need them.
Others, such as Paros, are mainly composed of marble, and iron ore occurs in some.
This outlet having been closed by small stones and sulphate of lime cement, the pit is filled with sulphur ore, which is heaped up considerably beyond the edge of the pit and covered with a layer of burnt-out ore.
It is thus a common mineral in all copper mines, and sometimes occurs in large masses, as in Arizona and in South Australia, where it has been worked as an ore of copper, of which element it contains 55%.
What we need to make its parts—iron ore to make steel, rubber to make tires, sand to make glass, petroleum to make plastics—is generally a few cents' worth of raw materials.
His people were starving as the planet died, and soon, the Council would realize the planet produced no ore without its rightful ruler.
If they didn't own the ore mines, they'd be using rocks to fight.
It is situated on the right bank of the Maros, on the outskirts of the Transylvanian Erzgebirge or Ore Mountains, and consists of the upper town, or citadel, and the lower town.
The most extensive fields are in the Mittagong, Wallerawang and Rylstone districts, which are roughly estimated to contain in the aggregate 12,944,000 tons of ore, containing 5,853,000 tons of metallic iron.
Some samples of ore, coal and limestone, obtained in the Mittagong district, with pig-iron and castings manufactured therefrom, were exhibited at the Mining Exhibition in London and obtained a first award.
In the last-named place the assays of ore yielded 22% of mercury.
The dust emitted from mining the ore was poisonous in its raw state.
Gothite occurs with other iron oxides, especially limonite and hematite, and when found in sufficient quantity is mined with these as an ore of iron.
Vessels go to Porman to land coke and coal, and to load iron ore and lead.
Next, south of the Great Northern, lay the Northern Pacific railway, starting on the west from Portland, Ore., and from Seattle and Tacoma, Wash., and extending east to Duluth, St Paul and Minneapolis by way of Helena, Mont.
The door pulled him in, and he sat in the doorway, coughing at the ore dust cloud and staring.
A large brass vessel used as a standard measure for the lead ore, and dating from the time of Henry VIII., is preserved.
Iron ore is found in the state in the coal hills (especially Laurel Hills and Beaver Lick Mountain), but the deposits have not been worked on a large scale.
The mineral had, however, been earlier known as a blue powdery substance, called "blue ironearth," met with in peat-bogs, in bog iron-ore, or with fossil bones and shells.
High, rich in hematite iron ore; valuable limestone deposits are found some 30 m.
For many years the average output was from 10,000 to 13,000 tons of ore, yielding from 22 to 23% of copper.
For the period of thirty years during which the mine was worked the production of ore amounted to 234,648 tons, equal to 51,622 tons of copper, valued at £4,749,924.
The returns from the copper fields in the state are at present a little over half a million sterling per annum, and would be still greater if it were not for the lack of suitable fuel for smelting purposes, which renders the economical treatment of the ore difficult; the development of the mines is also retarded by the want of easy and cheaper communication with the coast.
Cobalt occurs in New South Wales, Victoria and South Australia, and efforts have been made in the former state to treat the ore, the metal having a high commercial value; but the market is small, and no attempt has been made up to 1907 to produce it on any large scale.
Ore of cobalt is obtained in no other locality in India, and although zinc blende has been found elsewhere it is known to have been extracted only in this province.
The celebrated iron ore of Elba is of Tertiary age and occurs indifferently in all the older rocks.
Very little pig iron is tries US made, most of the iron ore being exported, and iron manufactured consists of old iron resmelted.
It lies in the midst of the great red and brown hematite iron-ore deposits of the Mesabi Range - the richest in the Lake Superior district - and the mining and shipping of this ore are its principal industries.
In the simplest and crudest method, as practised in Sicily, a mass of the ore is placed in a hole in the ground and fired; after a time the heat melts a part of the sulphur which runs down to the bottom of the hole and is then ladled out.
The ore is kindled from above and the fire so regulated (by making or unmaking air-holes in the covering) that, by the heat produced References.
Bollman in 1867 the ore may be extracted by carbon bisulphide.
Azurite occurs with malachite in the upper portions of deposits of copper ore, and owes its origin to the alteration of the sulphide or of native copper by water containing carbon dioxide and oxygen.
The Finland rappa-kivi, the Serdobol gneiss, and the Pargas and Rustiala marble (with the so-called Eozoon canadense) yield good building stone; while iron, copper and zinc-ore are common in Finland and in the Urals.
The external trade of the Russian empire (bullion and the external trade of Finland not included) since the year 1886 is shown in the following table: The exports rank in the following order :- cereals (wheat, barley, rye, oats, maize, buckwheat) and flour, 49.2%; timber and wooden wares, 7.2; petroleum, 5.8; eggs, 5.4; flax, 5; butter, 3; sugar, 2-4; cottons and oilcake, 2 each; oleaginous seeds, &c., 1.5; with hemp, spirits, poultry, game, bristles, hair, furs, leather, manganese ore, wool, caviare, live-stock, gutta-percha, vegetables and fruit, and tobacco.
Thus it will be observed that the five great cities of the Pacific coast-Seattle and Tacoma, Wash., Portland, Ore., and San Francisco and Los Angeles, Cal.-were already well supplied with railways; but the growth of the fertile region lying west of the transcontinental divide was most attractive to American railway builders; and railways serving this district, almost all of them in trouble ten years before, were showing great increases in earnings.
The long hauls in the United States make it specially important that the cars should carry a load in both directions, and so bcx cars which have carried grain or merchandise one way are filled with wool, coal, coke, ore, timber and other coarse articles for the return journey.
- To its mineral wealth Nevada owes its existence as a state; but for the richness of its veins of gold and silver ore it would be still little more than an arid waste.
After this last year the output of the Comstock mines declined on account of the exhaustion of the ore supply, the increased expense of mining at great depths, and the decrease in the price of silver.
In 1859 the mines were worked only for their gold; the ignorant miners threw away the " black stuff " which was really valuable silver ore with an assay value four times as great as that of their ores of gold; and when this was discovered there came a period of unprecedented silver production.
Ore was first discovered here in 1864, but it was five years before the mines became productive.
Considerable quantities of the following minerals have been found: barytes (heavy spar), magnetite (magnetic iron ore), and pyrolusite (manganese dioxide) in Humboldt county; roofing slate in Esmeralda county; cinnabar (ore containing quicksilver) in Washoe county; haematite in Elko and Churchill counties; cerussite and galena (lead ores) in Eureka county; and wolframite (a source of tungsten) at Round Mountain, White Pine county.
The principal mining product is mercury, extracted at Idria, while iron and copper ore, zinc and coal are also found.
Iron.The iron-mines of France are more numerous than its coalmines, but they do not yield a sufficient quantity of ore for the needs of the metallurgical industries of the country; as will be seen in the table below the production of iron in France gradually increased during the 19th century; on the other hand, a decline in prices operated against a correspondingly marked increase in its annual value.
Near Lithgow extensive deposits of limonite, or clay-band ore, are interbedded with coal.
For example, in the Gritti and Orlando processes the ore is charged into retorts and the fusion effected by superheated steam, the sulphur being run off as usual; or as was suggested by R.
By "make a car," I mean really make a car: dig iron ore out of the ground, smelt it to steel, wildcat for oil, find oil and refine it into gasoline, and so on.
The ore generally occurs in the form of oxides, manganite and pyrolusite, and contains a high percentage of sesquioxide of manganese.
The lodes are most frequently of great size, containing huge masses of galena, and so little gangue that the ore can very easily be dressed to 83 or 84%.
The intelligence was made known in April or May; and then began a rush of thousands, - men leaving their former employments in the bush or in the towns to search for the ore so greatly coveted in all ages.
At Meanwhile, the Venetian question was becoming more and ce ore acute.
The Ural industry is the older, and is still conducted on primitive methods, wood being largely used for fuel, and the ore and metals being transported by water down the Kama and other rivers.