john johnston in New South Wales works at Downer Mining (Drill and Blast Superintendent) and was educated at Colyton High.
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Downer Mining
Feb 2014
-
Present
Drill and Blast Superintendent
Downer Blasting Services
Aug 2010
-
Jan 2014
manager
Downer Blasting Services
Sep 2005
-
Aug 2010
Supervisor / Shotfirer
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