The deal is key to Gold Fields’ expansion in the Americas. Yamana Gold is at the centre of a takeover battle after two Canadian mining companies teamed up on an unsolicited $4.8 billion offer to break up an earlier merger agreement with South Africa’s Gold Fields. Pan American Silver and Agnico Eagle Mines announced Friday a cash-and-stock deal valued at $5.02 a share. Article by Doug Alexander, Jacob Lorinc and Felix Njini for Bloomberg, with comment from Mandi Dungwa – portfolio manager for Camissa Asset Management.