London-listed miners popped Thursday with the coppor market in turmoil, as investors digested better economic news from China.

While the cost of copper is going up for American businesses and consumers, the rest of the world is scratching its head while it enjoys a considerable discount on the price of copper.

Ivanhoe Mines founder Robert Friedland said the tariffs would cut America’s dependence on imported critical minerals at a time when self-sufficiency was crucial.

U.S. President Donald Trump's 50% tariff on copper has placed a record premium on prices of the metal in the United States that is likely to ease over the coming months as a stockpile created by traders anticipating the levy works through the system.

President Trump's threatened 50% copper tariffs have boosted prices for the metal in the U.S. far ahead of anywhere else, lifting the premium to roughly one quarter. Copper futures mainly trad