Metals Acquisition (MAC) (NYSE:MTAL,ASX:MAC) has signed a strategic investment deal with Polymetals Resources (ASX:POL), which is working to restart the Endeavor silver-zinc-lead mine and processing plant. The transaction will see MAC make an initial AU$2.5 million investment in Polymetals for a 4.31 percent interest in the company. An additional AU$2.5…
