Copper extended its powerful rally after bursting through $13,000 a ton for the first time, as a renewed rush to ship metal to the US fired up bullish traders and investors. Benchmark prices surged as much as 1.5% to a record $13,187 a ton on the London Metal Exchange, following a gain of more than 4% on Monday. The metal has now racked up an advance of more than 20% since mid-November. The rally has been underpinned by a rush to ship metal to the US, as the ongoing threat of import tariffs from President Donald Trump has caused US copper prices to trade at a persistent premium to those on the LME. That has spurred ... (full story)