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Posts Tagged ‘cannon mine’

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This week I had reason to go back and re-read three papers I co-authored in the early 1980s.  It is surprising how far advanced we were then, and how little things have changed, or how little of what did has become standard practice. The first paper is at this link.  Rick Call was the lead on the work we describe in this paper.  He was a large buff man, with an enormous beard, a perpetual pipe, and a totally irreverent attitude towards authority.  He sent Ned Larson and me to Texas, where we sweated through the heat to get the data.  Then back to Tucson to do the calculations.  I recently reconnected with Ned who is now in Las Vegas and the grandfather of sixteen grandchildren.  He is still with the U.S. Department of Energy which he joined after working with me for five years on the UMTRA Project in Albuquerque.  He is a great engineer, as was Rick. (more…)

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I have always been fascinated by the role mining played in the glory that was Athens and hence the whole western world we enjoy.  I only wish somebody would write an intense history of Athens focussed on the mining and the role it played in the rise and fall of Athens.Sadly, most commenters end back up saying mine responsibly.   Vague and hard to do. (more…)

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At the expense of repeating myself, I say again: I am convinced that the most successful mine closure ever is that of the Cannon Mine near Wenatchee.  At this link is a website that tells it all.  (more…)

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Professor Jere Jennings who taught so many of us now-old civil engineers in mining used to say: “When you have read everything there is to read, when you have done all the calculations possible, then drink a bottle of brandy and exercise engineering judgement.” (more…)

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There is more civil engineering in mining than there is mining engineering in mining.  To substantiate this controversial statement let me repeat below something I wrote a long time ago.  (more…)

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Risk is the product of probability and consequence.  In the long term, as time proceeds to infinity, the probability of an adverse event tends to one.  When seeking to control the risk of long-term tailings facility failure, there is little we can do about the probability of failure.  In the goodness of time it will occur.  All we can do today, is to seek to limit the consequences of failure, adverse performance, and unacceptable impact. (more…)

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