BHP Group’s last offer to acquire Anglo American was for about $53 billion (£40 billion) in the late-November blitz in which the mining giant sought to derail an Anglo American-Teck resources tie-up, sources familiar with the details have told Bloomberg. In November, a year and a half after abandoning a previous attempt to take over Anglo American, BHP offered around $53 billion, or £40 billion, in mostly stock but also cash, to acquire Anglo American, according to Bloomberg’s sources. BHP’s unsolicited…