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Cleaning Up The Deloro Mine Site In Marmora

Archived Bulletin

Cleaning Up The Deloro Mine Site In Marmora

McGuinty Government Protecting the Environment, Creating Jobs

Ontario is taking the next step toward cleaning up the Deloro mine site. This will create jobs and provide a boost to the local economy. 

Upgrading the access road between Highway 7 and the mine site will prepare the way for the heavy vehicles and equipment needed to construct the first of three caps. The engineered caps will cover contaminated wastes, isolating and containing them to ensure the site is safe for residents and the environment.

Road construction will begin in November 2010 and is expected to be finished by the end of December. Construction on the cap is targeted to begin in 2011.

This is the next step in a cleanup effort that began in 1979. It has included sealing abandoned mine shafts, preventing erosion and reducing the amount of arsenic coming off the site by 80 per cent.

Quick Facts

  • Since 1979, the Ontario government has spent more than $31 million on the cleanup. These efforts have reduced the amount of arsenic coming off the site by 80 per cent.
  • Danford Construction Ltd. of Madoc won the bid to upgrade the 1.7 kilometre access road. The value of the contract to upgrade the access road is $844,000. It will create about 10 jobs.
  • The Deloro Mine Site is a 202-hectare abandoned mining, refining, and manufacturing site used for about 100 years in the Municipality of Marmora and Lake, north of Belleville.
  • The Ontario government assumed responsibility for the site in 1979 when the owner failed to comply with orders to stop pollution.

Background Information

Additional Resources


“Our cleanup efforts at Deloro are just one example of our government's Open Ontario plan to help protect the environmental and economic health of Ontario communities. We are committed to making the site safe for generations to come.”

John Wilkinson

Minister of the Environment

“This is an important step toward the final cleanup solution for the Deloro site. I am also pleased that this construction will directly benefit the local economy.”

Leona Dombrowsky

MPP Prince Edward - Hastings

Media Contacts



Environment and Energy