Moussa81/iStock via Getty Images Northern Star Resources ( OTCPK:NESRF ) said early Monday it agreed to acquire Australian gold mining peer De Grey Mining ( OTCPK:DGMLF ) in an all-stock deal valued at ~A$5B (~US$3.26B). The key asset in the deal De Grey's ( OTCPK:DGMLF ) Hemi gold development, a.
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