The London Metal Exchange announced the suspension of deliveries of certain Russian-produced metals to its warehouses in the UK on April 1st. The exchange, which is owned by Hong Kong Exchanges and Clearing, suspended its operations for more than a week and canceled billions of dollars of trades on March 8, after a run in commodity prices that day that saw nickel rise to $100,000 a tonne. Tsingshan Holding Group, a Chinese metals group and the world’s biggest producer of stainless steel, built up a massive short position ahead of the surge in nickel prices earlier this month and found itself with $3 billion in losses. It was the second time in the 145-year-old exchange’s history that it had suspended metals trading, amid pressure on commodity prices following the Russian invasion of Ukraine. The LME said in a statement that there was a significant risk that customers receiving key metals from …