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How to use copper in a sentence

Looking for sentences and phrases with the word copper? Here are some examples.

Sentence Examples

The panels are connected to copper pipes that carry hot water, which radiates heat down from the panels to warm the area below.
If you have a contraceptive coil fitted, you must tell the radiographer as some have copper wire in them.
The acetylides of silver, copper, mercury, and gold are detonated by heat, friction, or shock.
The missile warhead incorporates a dynamically compensated shaped and copper lined charge.
Plump shrimp empanadas, fried dark as copper, get heat from adobo and sweetness from pineapple.
The chief problem for artists working on copper is to persuade the paint to adhere to the very smooth surface.
A tunnel was driven into the hill to intersect the copper load which had been located and opened at the top of the hill.
If a brass or copper lamp does not have a special no-tarnish finish, you can polish it or wax it after you wash and dry it.
The Daniell cell is a wet cell consisting of copper and zinc plates and copper and zinc sulphates.
Arranged in a radial pattern, the stone arches are crowned by a shallow domed roof clad in panels of green pre-patinated copper.
Filtering drinking water to remove toxic copper, lead, pesticides, chloride and additives is also recommended.
Venus was credited with a sea origin, and copper reminds us of this connection with the water element.
A warm hand lifted her chin upward as he leaned towards her and stared into her brown copper eyes.
The Centre is also monitoring a population of welwitschias further upriver, at the site of the old Hope copper mine.
Small amounts of copper are added to increase hardness for some applications.
They want real things instead such as gold, copper, metals, non-listed companies, cash or anything that is not a promise of jam tomorrow.
Will stricter emissions rules permit copper to make a comeback in automotive radiators?
This spray is longer lasting than the copper sprays used on tomatoes, and it is rainfast.
The microwaves are conducted through copper waveguides to the copper tube of the accelerator.
Paul Smith filled the bourse de Commerce with its copper cupola in June for his menswear show.
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After all, there are much larger risks in this world than traces of copper in your water.
Sukow suggested that the coloration may be due to aggregates of acicular crystals of copper minerals scattered or concentrated throughout the datolite nodule.
Studies have shown that adding large amounts of copper sulfate to a water feature through time eventually will kill it, making it sterile and unable to support life.
This effect is consistent with the expected large reduction in electron density on the amino nitrogen upon acetylation thus making coordination with copper much less strong.
It was the boys' job to light the copper at 6 a.m. on washdays.
You can find fourteen of these copper creations, all initially containing 3,900 liters of liquid apiece, on the Macallan estate.
Such a heating system, called radiant heat because the heat radiates up off the floor, relied on hot water piped through copper tubing installed beneath the tiles.
Why the size and shape of a copper still is at the core of whisky distillation.
Woven from copper and lead strips, two new works, constructed as grids, swollen with empty pregnancies, provide a text, censoring itself, in rhythms of weft and warp.
Steel products caused the most damage but prices for lumber, plywood, gypsum wallboard, copper, stainless steel, pipe and fuel are all joining in to pummel contractors.
He also had a framed backpack, a utility belt containing tools, a quiver containing 14 arrows, a flint dagger and most amazing of all, a copper axe.
These include iron, uranium, aluminium, nickel, platinum, tungsten, titanium, and copper.
French Polynesia's seafloor contains rich deposits of nickel, cobalt, manganese, and copper that are not exploited.
The country also has significant deposits of gypsum, limestone, and smaller quantities of copper, silver, gold, barite, and dolomite.
It is also possible that an engine was tried at Wheal Vor, a copper mine in Cornwall.
The graver, in ploughing furrows in the surface of the copper, raises corresponding ridges or burrs.
A simple transformer can be made by coiling two pieces of insulated copper wire around an iron heart.
Rudi Jass has developed a distinctly complementary style with copper, corten steel bronze, glass and stone.
It cuts no ice with a British copper to tell him you're an American citizen. 'It's British law and order over here,' says he.
By the continuall sorting and telling of this coyne, then did enter of the ewre of that brasse and copper under the nails of her fingers.
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These subdrifts are driven the full width of the copper and explore thoroughly the foot and hanging sides of the lode.
By heating together tin and copper, which were in abundance in the area, the Beaker culture people made bronze, and later iron from iron ores.
The emerging industrial period commenced around the development of copper smelting in the Swansea area.
The Romans also exploited metals such as copper, lead and silver in the area.
And I don't know if that copper reaction you teased me with for H2CO3 would run that direction, would it? Looks hinky.
Here the local sulpharsenide ores were smelted to produce the first copper axes used in Britain and Ireland.
Bell Beaker Culture in Bavaria used a specific type of copper, which is characterized by combinations of trace elements.
This same type of copper was spread over the area of the Bell Beaker East Group.
In 1984, a Beaker period copper dagger blade was recovered from the Sillees River near Ross Lough, County Fermanagh, Northern Ireland.
It was used to turn copper into bronze from around 2200 BC and widely traded throughout Britain and into Ireland.
Exceptions include copper hatchets and spearheads in the Great Lakes region.
This includes production of silver, iron, copper and other base metals from their ores.
After tin and lead, the next metal to be smelted appears to have been copper.
The discovery of copper and bronze manufacture had a significant impact on the history of the Old World.
Britain's exports are harder to detect archaeologically, but will have included metals, such as silver and gold and some lead, iron and copper.
Wheal Eliza Mine on the River Barle near Simonsbath was an unsuccessful copper and iron mine.
Even the copper coins were melted down and replaced with lightweight fakes.
The resultant gap was filled with copper tokens that approximated the size of the halfpenny, struck on behalf of merchants.
Boulton was awarded additional contracts in 1799 and 1806, each for the lower three copper denominations.
Some motors have conductors which consist of thicker metal, such as bars or sheets of metal, usually copper, although sometimes aluminum is used.
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This is especially true if the windings use aluminum rather than the heavier copper.
An alternative manufacturing method is to use wound copper wire laid flat with a central conventional commutator, in a flower and petal shape.
Before the 3rd century BC, copper was traded by weight, measured in unmarked lumps, across central Italy.
It is thought tin was mined here as early as the Bronze Age, and copper, lead, zinc and silver have all been mined in Cornwall.
Mining of tin and copper was also an industry, but today the derelict mine workings survive only as a World Heritage Site.
Roughly half of all copper mined is used for electrical wire and cable conductors.
The new wiring was implicated in a number of house fires and the industry returned to copper.
Electromagnets, vacuum tubes, cathode ray tubes, and magnetrons in microwave ovens use copper, as do waveguides for microwave radiation.
Increasing the mass and cross section of copper in a coil increases the efficiency of the motor.
Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years.
Copper is commonly used in jewelry, and according to some folklore, copper bracelets relieve arthritis symptoms.
Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper as a cyanide compound.
The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in metalliferous soils containing copper.
The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity.
The biological role for copper commenced with the appearance of oxygen in earth's atmosphere.
Conversely, Wilson's disease causes an accumulation of copper in body tissues.
Chronic copper toxicity does not normally occur in humans because of transport systems that regulate absorption and excretion.
Elevated copper levels have also been linked to worsening symptoms of Alzheimer's disease.
The tobacco plant readily absorbs and accumulates heavy metals, such as copper from the surrounding soil into its leaves.
Arsenic, tin, antimony, silver, gold, copper, and bismuth are common impurities in lead minerals.
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Impurities are mostly arsenic, antimony, bismuth, zinc, copper, silver, and gold.
Lead is added to copper alloys such as brass and bronze, to improve machinability and for its lubricating qualities.
Being practically insoluble in copper the lead forms solid globules in imperfections throughout the alloy, such as grain boundaries.
Consumption of excess zinc can cause ataxia, lethargy and copper deficiency.
The element is normally found in association with other base metals such as copper and lead in ores.
In his 1746 experiment, Marggraf heated a mixture of calamine and charcoal in a closed vessel without copper to obtain a metal.
Zinc is the fourth most common metal in use, trailing only iron, aluminium, and copper with an annual production of about 13 million tonnes.
Brass is generally more ductile and stronger than copper, and has superior corrosion resistance.
The zinc core is coated with a thin layer of copper to give the appearance of a copper coin.
In 1982, the US Mint began minting pennies coated in copper but containing primarily zinc.
Most silver is produced as a byproduct of copper, gold, lead, and zinc refining.
Silver is similar in its physical and chemical properties to its two vertical neighbours in group 11 of the periodic table, copper and gold.
The precipitation of copper in ancient silver can be used to date artifacts, as copper is nearly always a constituent of silver alloys.
Silver complexes tend to be similar to those of its lighter homologue copper.
It is the site of a large copper mine that was extensively exploited in the late 18th century.
Parys Mountain dominated the world's copper market during the 1780s, when the mine was the largest in Europe.
An added complication was that the water in the underground reservoir was highly polluted by copper and other metals and was very acidic.
He bought shares in eight Cornish copper mines and met Thomas Williams, the 'Copper King' of the Parys Mountain mines in Anglesey.
Jointly they set up the Cornish Metal Company in 1785 as a marketing company for copper.
Its aim was to ensure both a good return for the Cornish miners and a stable price for the users of copper.
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The great majority of the men worked in the copper mines, with others employed in fishing and subsistence agriculture.
The main heavy industry of note during this period was copper smelting, and this was centred on the towns of Swansea and Neath.
From the late 18th century until the early 20th century Glamorgan produced 70 per cent of the British output of copper.
As well as copper and iron, Glamorgan became an important centre for the tinplate industry.
Swansea also suffered a vast reduction on trade with the end of the area as a world leader in copper smelting.
Jones joined the guild and learned wood and copper engraving as well as experimenting with wood carving.
Porcelain wares may be decorated under the glaze using pigments that include cobalt and copper or over the glaze using coloured enamels.
Nutrients such as ammonia, ammonium nitrate, nitrite, phosphate, iron, copper, as well as CO2 are rapidly consumed by growing seaweed.
The Centre's main feature, the bronze coloured dome which covers the Donald Gordon Theatre, is clad in steel that was treated with copper oxide.
The architect, Jonathan Adams, decided not to use copper and aluminium as they would both change colour with age and weather conditions.
For example, a mining engineer and geologist may target metallic ores such as galena for lead or chalcopyrite for copper.
Modern turbines uses a couple of tonnes of copper for generators, cables and such.
In the early 3rd millennium BC, the metallurgy of copper and silver began to develop.
The region is rich in timber, iron and copper with the best farmland in southern Sweden.
Portugal is a significant European minerals producer and is ranked among Europe's leading copper producers.
He found 30 copper coins dating between the reigns of Charles II and George III under the chapel floor, along with a female skeleton.
The Baltic Shield yields important industrial minerals and ores, such as those of iron, nickel, copper and platinum group metals.
Lobsters, like snails and spiders, have blue blood due to the presence of hemocyanin which contains copper.
Hatchet shaped copper currency was produced by the Peruvian people, in order to obtain valuables from pre Columbian Ecuador.
The novel fifth fuze was a copper wire antenna with a float to extend it above the mine.
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If a submarine's steel hull touched the copper wire, the slight voltage change caused by contact between two dissimilar metals was amplified.
Egyptian blue, also known as calcium copper silicate is a pigment used by Egyptians for thousands of years.
He says mercury is used for gilding copper, while antimony is found in silver mines and is used as an eyebrow cosmetic.
Lichens can accumulate several environmental pollutants such as lead, copper, and radionuclides.
A disadvantage is that metals commonly found in industries such as steel and copper are oxidized faster by untreated water and steam.
The vents create sulfide deposits, which contain precious metals such as silver, gold, copper, manganese, cobalt, and zinc.
The first most significant metal manufactured was bronze, an alloy of copper and tin, each of which was smelted separately.
Tin was required which when smelted with copper from Cyprus created the durable metal alloy bronze.
One mechanism proposed is that not much copper is transported up the shoot of the plant, and is excreted from decaying leaves.
Other minerals include china clay and ores of copper, lead, zinc and tungsten.
These include engraved silver and copper vases, Indian armour, and a model of an Indian palace.
A variety of heads were flown in these tests, including a plain copper sphere and a silica sphere.
Early breweries typically used large copper vats in the brewhouse, and fermentation and packaging took place in lined wooden containers.
Breweries today are made predominantly of stainless steel, although vessels often have a decorative copper cladding for a nostalgic look.
Iron ore is rare, but in some countries there is a considerable amount of copper, zinc, tin, chromite, manganese, magnesite and bauxite.
Minoan metal masters worked with imported gold and copper and mastered techniques of wax casting, embossing, gilding, nielo, and granulation.
He perfected Constantine I's coinage system by definitively setting the weight of the copper follis, the coin used in most everyday transactions.
For peasants this meant economic disaster, since they paid taxes in silver while conducting local trade and crop sales in copper.
Sumerian tablets refer to a country called Magan and Akkadian ones Makan, a name which links Oman's ancient copper resources.
Fastenings used in the hull and possible copper sheathing dated it to the 17th or 18th century.
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Small scale seasonal farming became widespread, and mines began to exploit abundant reserves of lead, copper, zinc, iron, and coal.
Currently, mining in the Andes of Chile and Peru places these countries as the first and third major producers of copper in the world.
The copper roof panels were prebent to aid in creating a tight waterproof seal.
Trade goods carried included cacao, obsidian, ceramics, textiles, food and drink for the crew, and copper bells and axes.
Silver and copper from Japan were used to trade with India and China for silk, cotton, porcelain, and textiles.
In contact with air the copper formed compounds that prevented the absorption of vitamins by the intestines.
Natural resources include timber, fish, gold, copper, offshore oil, and hydropower.
During the 17th century the first deposits of iron and copper ores, mica, gemstones and other minerals were discovered in the Ural.
At the top of each furnace were up to seven copper kettles or boilers, each one smaller and hotter than the previous one.
Japan was to become a major exporter of copper and silver during the period.
Gold and silver ore is still mined with silver still the major ore produced, followed by gold, lead, copper, zinc and sulfur.
Other products being mined or being studied are mercury, tin, copper, lead, sand, fluorite, feldspar, lime, kaolin, and more.
Across the Canadian Shield and in the north there are large iron, nickel, zinc, copper, gold, lead, molybdenum, and uranium reserves.
Many metallic minerals are exploited, the principals are gold, iron, copper and zinc.
The rulers of Kerala, in appreciation of their assistance, had given to the Malankara Nazranis, three deeds on copper plates.
Mifepristone is also more effective than levonorgestrel while copper IUDs are the most effective method.
While all methods are beneficial financially, the use of copper IUDs resulted in the greatest savings.
The Upper Peninsula proved to be a rich source of lumber, iron, and copper.
They are finding the remains of ovens for smelting copper and preparing food as well as quotidian objects such as mats and storage pots.
Bronze, an alloy of copper and tin, is first known from about 2500 BCE, but did not become widely used until much later.
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The Chinese invented blast furnaces, and created finely tuned copper instruments.
Nickel and copper increase strength, and machinability, but do not change the amount of graphite formed.
Unlike copper and tin, liquid or solid iron dissolves carbon quite readily.
Sao artifacts show that they were skilled workers in bronze, copper, and iron.
Successful Woolf compound engines were produced in 1814, for the Wheal Abraham copper mine and the Wheal Vor tin mine.
These are elements with a characteristic lustre such as iron, copper, and gold.
The top of the glass has a perforated copper cap with a gauze screen above that.
A galley with gauze provided the inlet, above the glass was a chimney with perforated copper cap and gauze outer.
From 1761 onwards, copper plating had been fitted to the undersides of Royal Navy ships, to protect the wood from attack by shipworms.
However, the copper bottoms were gradually corroded by exposure to the salt water.
He attached sacrificial pieces of zinc or iron to the copper, which provided cathodic protection to the host metal.
By 1824, it had become apparent that fouling of the copper bottoms was still occurring on the majority of protected ships.
In 2008, Bloomberg claimed child labour in copper and cobalt mines that supplied Chinese companies in Congo.
A few modern artists make lace with a fine copper or silver wire instead of thread.
Coal combustion produces emissions containing aluminium, arsenic, chromium, cobalt, copper, iron, mercury, selenium, and uranium.
The copper mines prospered for about seventy years, but by the early 17th century the industry was in decline.
Coniston grew as both a farming village, and to serve local copper and slate mines.
As well as lead and copper mining, quite a large undertaking of slate mining has been taking place over the years.
At least five copper veins were mined named the Sump, Pave York, Low Gill and Gossan Veins.
Dale Head Mine was driven below the northern crags for copper, several levels still being visible.
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Long Work was another copper mine a little further down the valley, worked for malachite and pyrite from Elizabethan times.
The slate quarries and copper mines inspired Pigeon Post, a later novel in the same series.
Axes made of copper, bronze, iron and steel appeared as these technologies developed.
Nails were traditionally of copper, although there are modern alloy and stainless steel alternatives.
The school prospered and swiftly developed a reputation for high quality copper and silver decorative metalwork.
The mines were expanded in the 1790s and copper and galena were also extracted.
It is a phase of the Bronze Age before it was discovered that adding tin to copper formed the harder bronze.
An archaeological site in Serbia contains the oldest securely dated evidence of copper making at high temperature, from 7,500 years ago.
In former times, lead, silver, tin and copper were mined extensively on Dartmoor.
Until the beginning of the 20th century, the main industry was the mining of copper and tin.
There is a lot of copper oxide, but I can remove that by melting everything and slagging it off.
Pull up the sleeving along the cable, including the copper wire, then using a cigarette lighter heat the sleeving to make it shrink.
This bend eliminates unsightly waviness that often develops as you cut the copper with a tin snips.
The usefulness of acid leveling copper can be expanded to plate many more unbuffed die castings.
It is clear, for instance, in Central Africa, where copper and tin were unprocurable, that man must first have used iron.
The Wilson disease gene is a copper transporting ATPase with homology to the Menkes disease gene.
He said that Iran currently ranked 17th in terms of copper production and 8th in terms of barite and chromate production.
Westmin also developed the large-scale Lomas Bayas copper project in Chile.
O'okiep comprises a copper mine and a smelter situated in the North Western Cape Province of South Africa.
Wilson's disease is a rare, inherited disorder that causes too much copper to accumulate in the liver, brain, and other vital organs.
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The Salto de Albi porphyry copper system is located within the Albi ravine.
To apply the algicide, crews affixed a huge spreader filled with copper sulfate to the underside of a helicopter.
Some economic-development projects were completed, but Zaire remained dependent on income from copper exports.
The tank will be fitted with copper and ferrous anodes which are fed with an electrical current from a control panel.
Copper transfer between Neurospora copper metallothionein and type 3 copper apoproteins.
The kiswa is wrapped around the Kaaba and fixed to the ground with copper rings.
The company's claims, known as the Larder Group, have the Walsh Katrine Mine, Copper King and Kerr North gold and copper properties.
Significant natural resources include iron ore, coal, potash, timber, lignite, uranium, copper, natural gas, salt, nickel, arable land and water.
Swansea originally developed as centre for metals and mining, especially the copper industry, from the beginning of the 18th century.
During the Roman occupation, the area was notable for the mining of copper.
The A380 uses aluminium power cables instead of copper for weight reduction.
As a child he would watch steam engines pump water from the deep tin and copper mines in Cornwall.
However, his filament had low resistance, thus needing heavy copper wires to supply it.
Somalia has reserves of several natural resources, including uranium, iron ore, tin, gypsum, bauxite, copper, salt and natural gas.
Since the 10 century, rulers of Kilwa would go on to build elaborate coral mosques and introduce copper coinage.
The country has abundant natural resources like oil and natural gas, tin, copper and gold.
Indonesia has extensive natural resources, including crude oil, natural gas, coal, tin, copper, and gold.
He is also said to have carried out experiments in coal gas, using coal heated in a copper kettle in a small cave near his father's mill.
By 960 the Song Dynasty, short of copper for striking coins, issued the first generally circulating notes.
Substantial quantities of gold, copper, and lead were extracted, along with lesser amounts of zinc and silver.
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Silver, copper, tin and meteoric iron can also be found in native form, allowing a limited amount of metalworking in early cultures.
As native lead is extremely rare, such artifacts raise the possibility that lead smelting may have begun even before copper smelting.
The extraction of iron from its ore into a workable metal is much more difficult than for copper or tin.
Common engineering metals include aluminium, chromium, copper, iron, magnesium, nickel, titanium and zinc.
Inhabitants of the Indus Valley, the Harappans, developed new techniques in metallurgy and produced copper, bronze, lead and tin.
This network imported tin and charcoal to Cyprus, where copper was mined and alloyed with the tin to produce bronze.
Alloying of copper with zinc or tin to make brass or bronze was practised soon after the discovery of copper itself.
One copper mine at Great Orme in North Wales, extended to a depth of 70 meters.
The preceding period is known as the Copper Age and is characterised by the production of flat axes, daggers, halberds and awls in copper.
Iron and copper smelting appeared around the same time in most parts of Africa.
However, evidence for copper production in this region before 1000 BC is debated.
Gold ore dumps are the source of many heavy elements such as cadmium, lead, zinc, copper, arsenic, selenium and mercury.
This observation explains the low hardness and high ductility of single crystals of copper.
As with other metals, if copper is put in contact with another metal, galvanic corrosion will occur.
Copper tarnishes when exposed to some sulfur compounds, with which it reacts to form various copper sulfides.
Estimates of copper reserves available for mining vary from 25 years to 60 years, depending on core assumptions such as the growth rate.
This step exploits the relatively easy reduction of copper oxides to copper metal.
Like aluminium, copper is recyclable without any loss of quality, both from raw state and from manufactured products.
In volume, copper is the third most recycled metal after iron and aluminium.
The process of recycling copper is roughly the same as is used to extract copper but requires fewer steps.
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Copper occurs naturally as native metallic copper and was known to some of the oldest civilizations on record.
The seven heavenly bodies known to the ancients were associated with the seven metals known in antiquity, and Venus was assigned to copper.
In North America, copper mining began with marginal workings by Native Americans.
At first, the copper itself was valued, but gradually the shape and look of the copper became more important.
In ancient India, copper was used in the holistic medical science Ayurveda for surgical instruments and other medical equipment.
It satisfied two thirds of Europe's copper consumption in the 17th century and helped fund many of Sweden's wars during that time.
For more than two centuries, copper paint has been used on boat hulls to control the growth of plants and shellfish.
A small part of the copper supply is used for nutritional supplements and fungicides in agriculture.
Machining of copper is possible, although alloys are preferred for good machinability in creating intricate parts.
The National Mining Association provides data pertaining to coal and minerals that include beryllium, copper, lead, magnesium, zinc, titanium and others.
Bright copper utensils, strings of onions, and gigantic sausages, wine-skins, chillies, and castanets hung with a miscellanea of all kinds from the roof and walls.
We're still purchasing copper ore, but the market for refined is weaker.
Poland is also one of the world's biggest producers of copper, silver and coal, as well as potatoes, rye, rape seed, cabbage, apples, strawberries and ribes.
Early Geordie lamps had a simple pierced copper cap over the chimney to further restrict the flow and to ensure that the vital spent gas did not escape too quickly.
To the right rose a semicircle of old planes and a copper beech whose branches plunged to the ground and made a broad bell-tent that was cool and gloomy even at midday.
The line was originally built in the 1970s with Chinese money, engineering and workers as a means of exporting Zambian copper without relying on Apartheid-era South Africa.
Fearing the inflation that plagued the Yuan dynasty, the Ming Dynasty initially rejected the use of paper money, and reverted to using copper coins.
The inner chimney is made of copper coated with a fusible metal.
The Callawaya herbalists traded in tropical plants between 6th and the 10th centuries, while copper was dealt by specialized merchants in the Peruvian valley of Chincha.
From this point, the family relied upon continued income from the copper mines at Devon Great Consols, and sold Woodford Hall to move into the smaller Water House.
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The last prehistoric phase is the Metal Age, as the use of elements such as copper, bronze and iron proved to be a great material transformation for these ancient societies.
Prior to the Inca dominance, specialized long distance merchants provided the highlanders with goods such as gold nuggets, copper hatchets, cocoa, salt etc.
Galvanic corrosion was not understood at that time, but the phenomenon prepared Davy's mind for subsequent experiments on ship's copper sheathing.
Germany had to import most of its iron, rubber, oil, bauxite, copper and nickel, making naval blockade a devastating weapon against the German economy.
Parys Mountain on Anglesey was former the world's largest copper mine and contains a wide range of minerals including Pyrite, Galena and the rate Anglesite.
Originally, copper pipes ran directly from the brewery, but when the brewery moved out of the city in the 1990s, Thor Beer replaced it with a giant tank.
This type of mine had a copper wire attached to a buoy that floated above the explosive charge which was weighted to the seabed with a steel cable.
Two of these ten items are high quality pieces of copper alloy, but they are different in style to the gold and silver items of the original hoard.
Cheap foreign imports of copper had forced the Crown to steadily increase the size of the copper coinage to maintain its value relative to silver.
Wilson disease was confirmed by documentation of Kayser-Fleischer rings in both eyes, a low serum ceruloplasmin level and increased 24-hour urinary copper excretion.
Trade with Early Modern Europe and Japan brought in massive amounts of silver, which then replaced copper and paper banknotes as the common medium of exchange in China.
Copper mining is mentioned, using a variety of ores including copper pyrites and marcasite, some of the mining being underground, some on the surface.
They did after all preserve the copper as Davy said they would.
The discovery of lead ore and copper in North America prompted an influx of Cornish miners to the continent, particularly around the Upper Mississippi River.
Although coal, hydrocarbons, iron ore, platinum, copper, chromium, nickel, gold and other minerals have been found, they have not been in large enough quantities to exploit.
There are deposits of iron ore, lead ore, copper, silver, mercury, rock salt, phosphate, marble, anthracite coal and natural gas among other resources.
Devon and Cornwall were major sources of tin for much of western Europe and copper was extracted from sites such as the Great Orme mine in northern Wales.
Asia is the largest continent in the world by a considerable margin, and it is rich in natural resources, such as petroleum, forests, fish, water, rice, copper and silver.
Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt, and copper.
The Bronze Age in Ireland commenced around 2000 BC, when copper was alloyed with tin and used to manufacture Ballybeg type flat axes and associated metalwork.
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Thus when archaeologists come upon objects of obsidian or chert, copper or gold, they have almost unparalleled opportunities to interpret ancient pathways of trade.
Natives who brought the amount were given a copper token to hang around their necks, and those found without tokens had their hands amputated and were left to bleed to death.
The company claimed it has a strict policy whereby all copper was mined correctly, placed in bags with numbered seals and then sent to the smelter.
These holes demonstrate that the Lower Zone massive sulphide body remains thick down dip and down plunge and retains its classic high copper footwall zonation.
Alloys with lower karat rating, typically 22k, 18k, 14k or 10k, contain higher percentages of copper or other base metals or silver or palladium in the alloy.
In humans, copper is found mainly in the liver, muscle, and bone.
In the first half of the 19th century, the Cornish people were leaders in tin and copper smelting, while mining in Cornwall was the people's major occupation.
The penny was the first of its denomination to be struck in copper.
Demand for copper fell and the cost of extracting it was high.
The amount of copper in use is increasing and the quantity available is barely sufficient to allow all countries to reach developed world levels of usage.
He also had shares in several Cornish copper mines, and had a large personal stock of copper, purchased when the mines were unable to dispose of it elsewhere.
Because of these and other factors, the future of copper production and supply is the subject of much debate, including the concept of peak copper, analogous to peak oil.
A local cable manufacturer donated the copper conductor for the coils.
Little Langdale has been heavily mined and quarried over the last several hundred years particularly for copper and slate although there is little activity there at present.
The copper penny was the only one of these coins to survive long.
Native copper does not naturally occur in large amounts, but copper ores are quite common and some of them produce metal easily when burned in wood or charcoal fires.
Numerous copper alloys have been formulated, many with important uses.
For example, copper salts are used to test for reducing sugars.
The result was a coin copper in appearance but relatively pale in colour.
Brass, an alloy of copper and zinc, is of much more recent origin.

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