Britain’s only tin mine could end up exporting much of its future production to the United States after the American government signalled it is prepared to provide up to $225 million (£166 million) in financing to revive the historic South Crofty site in Cornwall. Cornish Metals, which is working to bring the South Crofty mine near Camborne back into production, has received a letter of interest from the Export-Import Bank of the United States (Exim),...










