Bidding is now open for the main Giant Mine remediation contract worth hundreds of millions of dollars.
There is no exact price tag for the contract — it's a competitive bidding process. But the cost of remediation is estimated at $600 million, according to the federal government tender posted online last week.
Companies have until March 16, to submit expressions of interest to become the main construction manager for the enormous toxic site.
The project is expected to take up to 10 years, starting in 2018.
Work includes freezing 237,000 tons of arsenic-trioxide dust underground, securing the integrity of mining pits, tunnels and tailings ponds and demolishing buildings on site.
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