Copper plated with nickel and gold is often used.

Copper wires are also plated with other metals, such as tin, nickel, and silver to handle different temperatures, provide lubrication, provide easier stripping of rubber from copper.

Copper wires in a cable may be bare, or they may be plated with a thin layer of another metal, most often tin but sometimes gold, silver or some other material.

Copper plating is the process in which a layer of copper is deposited on the item to be plated by using an electric current.

* 708 – Copper coins are minted in Japan for the first time ( Traditional Japanese date: August 10, 708 ).

Copper cathodes produced using this method are also described as electrolytic copper.

Copper and tin ores are rarely found together ( exceptions include one ancient site in Thailand and one in Iran ), so serious bronze work has always involved trade.

Copper cables, petroleum products, leather, medical equipment, marble, gypsum, ceramic tiles, salt, mineral water and beverages, meat products, and gums are produced nearby.

Today Copper Age, Eneolithic and Chalcolithic are used synonymously to mean Evans ' original definition of Copper Age.

Copper coins are very rare after 402, although minted silver and gold coins from hoards indicate they were still present in the province even if they were not being spent.

The GGC, Cemetery H, Copper Hoard and PGW cultures are candidates for cultures associated with Indo-Aryan migration s.

In addition to T-shaped IUDs, there are also U-shaped IUDs ( such as the Multiload ) and 7-shaped Gravigard Copper 7 ( with a mini version for nulliparous women introduced in the 1980s ).

* 1971 – Copper mines in Chile are nationalized.

Copper alloy coins are harder and more durable, so they can resist scratches and dents.

The GGC, Cemetery H, Copper Hoard and PGW cultures are candidates for cultures associated with Indo-Aryans.

Copper tips are sometimes filed when worn down.

The metals suitable for wire, possessing almost equal ductility, are platinum, silver, iron, copper, aluminium and gold ; and it is only from these and certain of their alloys with other metals, principally brass and bronze, that wire is prepared ( For a detailed discussion on copper wire, see main article: Copper wire and cable.

Some parts of the Copper Belt have experienced a significant revival as spin-off effects from the massive capital reinvestment are experienced.

* August 29 – Copper coins are minted in Japan for the first time ( Traditional Japanese date: August 10, 708 ).

Copper rivet s for reinforcing pockets are a characteristic feature of blue jeans.

Copper and gold mines are currently in production at Porgera, Ok Tedi, Misima, Lihir, Simberi and Hidden Valley.

Below are examples of current or recently approved controversial projects: M10 Motorway in Russia, the Gazela Bridge in Serbia, Sava Bridge in Croatia, D1 Motorway in the Slovakia, Sostanj Power Plant in Slovenia, Bujagali Hydroelectric Power Plant in Uganda, Mopani Copper Mine in Zambia, among others.

The original inhabitants are believed to have been members of Paleo-Indian cultures, followed by the " Old Copper " people, who hunted with spear points and knives and fished with metal hooks.

The Kerredge Gallery and the Republic Bank Gallery are both located inside the Copper Country Community Arts Center.

The other disputes are: cattle and grain, the tree and the reed, Silver and Copper, the pickax and the plough, and millstone and the gul-gul stone.

An example of such is the lead-free primary explosive Copper ( I ) 5-nitrotetrazolate, an alternative to lead azide.

Copper and antimony act as hardeners while lead is common in the lower grades of pewter, which have a bluish tint.

Copper, lead, bronze, and silver mines were exploited in Achaea, though production was not as great as the mines of other Roman-controlled areas, such as Noricum, Britannia, and the provinces of Hispania.

Copper and lead have been the main metals mined in the mountains and a brief gold rush occurred in the 18th century.

Copper and lead are smelted on site, with copper anodes and zinc concentrate being transported 900 km to the city and port of Townsville on the east coast.

In early July 1917, Little arrived in Butte, Montana, to help organize a copper miners ' union and lead a miners ' strike against the Anaconda Copper Company.

* " Heavy metals ( especially copper, lead and zinc ) are by far the most prevalent priority pollutant constituents found in urban runoff ... Copper is suggested to be the most significant < nowiki ></ nowiki > of the three.

Copper was brought from as far away as Ecton Hill in Staffordshire and the canal opening the way for lead from Ecton, as well as Wirksworth to be taken to the Lead Market at Hull and chert from Bakewell to the Potteries.

: a Copper jacket with a PETN and lead core.

Although it is not strictly fair to compare a nickel-copper smelter to a lead smelter, by so doing one can get an idea of how poor the containment of lead is at Copper Cliff.

In 1998, Inco emitted 146. 7 metric tons of lead at Copper Cliff with a smelter production of 238, 500 metric tons of nickel-copper matte.

With this emission factor, Copper Cliff would be required to limit emissions of lead to approximately 1. 0 MT per year, demonstrating that the actual emission is about 150 times greater than allowed by US regulations for a lead smelter.

As a result of the excessive lead emissions from the Inco Superstack, the surrounding community of Copper Cliff was found to have levels of lead in soil tests at a level sufficient to cause harm to young children.

Copper and lead levels at the consumer's tap are regulated to protect consumer health.

Copper and lead ore were found in the 1840s, and by 1877, 4, 000 tons of copper and lead were being produced each year.

The green colour of Saintonge comes from Copper oxide, added to the clear lead glaze finish.

Copper was mined at Kapunda, Truro and Kanmantoo and may be again and a zinc ( and lead, silver and gold ) mine is proposed near Strathalbyn.

Copper Alloys C23000, which is also known as red brass, contains 84-86 % copper, 0. 05 % each iron and lead, with the balance being zinc.

Copper replaced the lead at that time.