The Canadian Government has rejected Taseko's proposal for the development of a gold and copper mine near Fish Lake, British Columbia for the second time in three years.
Taseko submitted its proposal for the open pit mine, which is located about 125km south-west of Williams Lake, for the second time in October 2013.
The New Prosperity mine project is said to possess a measured and indicated resource of 5.3 billion pounds of copper and 13.3 million ounces of gold.
Taseko expects the project to generate more than $1bn in government revenue and create nearly 2,000 jobs, over its anticipated 20-year mine life.
Federal minister of environment Leona Agluqqak has stated that the controversial project will cause irreversible damage to the environment.
In 2010, Taseko's proposal to use Fish Lake as a tailings pond was rejected by the ministry of environment due to environmental concerns.
The company revised its mine plan to address the concerns and re-applied in 2012, but this application was also opposed by local groups and other opponents.
The mining company disagreed with the federal government's decision and believed that the decision was based on a panel report that contained serious flaws.
Taseko challenged the findings of the government-appointed review panel and filed for a judicial review in 2013.
The company has noted that it will re-apply for the approval.