Sherritt (T.S) up 7.3% on activist rebuke, report on giant Ambatovy nickel mine By: Stockhouse Newswire March 31, 2014 at 10:16 AM EDT The $7.2 billion spent at Ambatovy is reputed to be the largest single mining investment ever made in Africa. Read More >> Related Stocks: SNC-Lavalin Group Sherritt International Corporation