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Only one things gives me great pleasure and intense enjoyment: riding my bicycle. This morning it was drizzling as I opened the front door.  Undeterred, I mounted my bike and headed out into the soft waters making the sky & sound. Click to the upper gears and speed down the road past new, cramped townhouses.  Over asphalt and cut logs, cut to make way for a new bridge.  Bounce over the gravel alongside the river and salmon spawning habitat, to the main road clogged with trucks and cars. Continue Reading »

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The Mining Association of Canada (MAC) has announced that they are convening a panel to ” review its tailings management requirements to ensure failures, such as the one registered at Imperial Metals’ Mount Polley open pit copper and gold mine, can be prevented.” Continue Reading »

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Here is the link to the new report Lower Athabasca Region Tailings Management Framework for the Mineable Athabasca Oil Sands.  In some fifty pages it sets out a new way of dealings with oil sands tailings.  Lots of detail yet not much detail. The document sets itself these goals: Continue Reading »

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In an upcoming EduMine course on Risk Assessment, Decision Making, and the Management of Mine Geowaste, we write the following on the topic of Net Present Value (NPV): Continue Reading »

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There are so many obvious comments on this story, that I refrain from comment.  The story tells its own story and carries it own implications loud enough. I refer to the story at many links.  This one says: “Los Palambres was also hit this week by a court ruling that it should demolish a mine tailings dam which protesters say is affecting water availability.” Another report says: “As a consequence Los Pelambres must destroy part, or all, of the tailings dam wall.” A more complete picture emerges from this report: Continue Reading »

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Here is a comment posted on a recent blog item:

Jack,

I have been following your blog since the Mt Polley incident.

I am not sure if you have seen the design yet for the proposed copper project located in the Thompson River Watershed near Vavenby. Here is the link to the Knight Piesold report Appendix 3E. http://a100.gov.bc.ca/appsdata/epic/html/deploy/epic_document_333_38590.html

You will have to click on Appendix 3-E to download the PDF.

It looks like they are submerging PAG which results in a huge amount of water storage ( see attached document which shows the supernatant pond volume increasing every year; similar to Mt Polley). Let us hope they have their water quality model correct otherwise it will be a large treatment plant at the end of the life of mine.

Thought you might be interested in seeing what the BC regulators are being presented with even after the Mt Polley disaster. Will industry change to a more conservative approach to tailings designs?

Enjoy your musings.

I went to the site recommended and downloaded the Executive Summary, the section on Geochemistry, and the section on Closure.  Fascinating writings, particularly coming post-Mt Polley.  I hope some readers of this blog take a look at the report and comment.  For this is a public posting of design documents–worthy of repetition.  Now it remains to be seen if such public posting leads to public reading and comment.  For that, afterall, is the purpose of such public posting of designs for new mines and their tailings facilities.

I note that the closure cost estimate is some $16 M.  Presumably that is the basis of the bond being posted?  Comments on its sufficiency would be of interest.  As would comments on the way they plan to deal with acid generating tailings. As would comments on the above comment/question as to whether this is a more conservative design than Mt Polley.

I have not read in sufficient detail to comment with insight.  And maybe no other BC engineer has any more time or inclination than I have to comment.  That is a pity, but inevitable.  Is this a pointed reminder that in addition to such public postings, maybe we should have public posting of the comments by an Independent Tailings Review Board as Morgenstern recommends in the Mt Polley report?  Again your perspective would be welcome.

If you find the materials at the listed site formidable, rather go to the company’s website at this link.   It seems not to have been updated since 2013.  So the BC regulators are faster and more  up-to-date in their posting.

In the current mining downturn, these numbers are impressive:

The project is expected to employ up to 430 hourly and staff personnel. Based on industry experience, approximately 1,000 to 1,200 jobs will be created in the surrounding communities and elsewhere within the province to provide support to the project.

No wonder the BC government is doing all it can to get the word out about the project.

Continue Reading »

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I get many pleas for help in finding a job in mining.  Most I refer to Careermine.  For that is the site that lists every possible job in mining.  Yet this one caught my attention, for it is a story of love.  At least I think so.  I have the sender’s permission to post what she sent me.  Here it is. Continue Reading »

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