Phelps Dodge Corp. is preparing to add pressure to the bidding war for Inco by potentially injecting C$6.75 billion into its cash-and-paper offer for the Canadian nickel miner, the Wall Street Journal reported on Wednesday, citing people familiar with the matter. Under the new plan, Phelps would keep its offer intact but would boost its cash component to include more than C$50, with the rest in Phelps Dodge shares, the report said. The strategy comes in reaction to a refreshed offer for Inco from Teck Cominco, which also increased its cash component