TORONTO, ONTARIO -- (Marketwire) -- 09/04/12 -- Detour Gold Corporation (TSX:DGC) ("Detour Gold" or the "Company") is pleased to announce an updated open pit mine production plan for its 100% owned Detour Lake gold mine in northeastern Ontario. The updated mine production plan supports a 21.5-year operating life with the current mineral reserve of 15.6 million ounces of gold (470 million tonnes grading 1.03 g/t Au). Project construction is progressing very well, having reached the 87% completion mark at the end of August 2012. Detour Lake remains on budget and on schedule for gold production to start in the first quarter of 2013. All figures are in Canadian dollars except where noted.

A National Instrument 43-101 ("NI 43-101") technical report for the updated mine plan will be filed within 45 days on SEDAR (www.sedar.com) and on the Company's website (www.detourgold.com).

Highlights

--  Proven and probable open pit reserves of 15.6 million ounces contained
    gold 
--  Reduced strip ratio (waste to ore) to 3.7:1 
--  21.5 years life of mine (LOM) at mill throughput ranging from 55,000 to
    61,000 tpd 
--  Average annual gold production of approximately 657,000 ounces 
--  Average LOM cash operating costs of $710/oz and total cash costs of
    $749/oz 
--  2013 gold production forecast between 350,000 and 400,000 ounces 
--  On schedule to start gold production in Q1 2013 

http://www.detourgold.com/investors-centre/News-Releases/news-Release-Details/2012/
Detour-Gold-Announces-Updated-Open-Pit-Mine-Production-Plan-For-Its-Detour-Lake-Gold-
Project-in-Ontario1130843/default.aspx