Mink loose out to voles

Back from another holiday to discover that voles have been reintroduced to River Dore at the expense of mink that had to be removed from the river before they were released: a major factor vole in decline is being eaten by American mink, “which is catastrophic for water voles” say The Game Conservancy Trust. The mink are trapped and then later killed as the trust said it was not practical to rehome the mink as it would only move the problem. Can they not turn them into coats at all?