The general approach to undertaking a risk assessment is well described in International Standard IEC/ISO 31010, which also provides considerable information about risk assessment methods. It notes, however: “The standard does not provide specific criteria for identifying the need for risk assessment, nor does it specify the type of risk analysis method that is required for a particular application.” (more…)
Archive for the ‘Engineering – General’ Category
Posted in About the news, brandy, consulting, decomissioning, Enviromental, environmental, mining, North America, Reclamation, tagged contaminated sites, government, gravy trian, superfund, usa on April 11, 2014 | Leave a Comment »
Below is a report that hit my email inbox today. I repeat in full, not because mines are the main culprit, but because mines are probably NOT the main culprit. This report is a sobering reminder that dry-cleaners, car-battery recyclers, old military bases, and jails are also major contaminators. Yet so little is written or done about them—it is not a very sexy topic–so much easier to excoriate mining. Not that Giant, Faro, and a few other old mines are going to be cheap to cleanup. (more…)
Posted in About the news, brandy, consulting, decomissioning, Enviromental, Global Warming, Law (Mining), mining, North America, People, Reclamation, Tailings, tagged andy robertson, cold climate, Global Warming, INAC, maintenance, mike nahir, mine closure, survelllance on April 10, 2014 | 6 Comments »
Posted in acid mine drainage, brandy, British Columbia, consulting, Geosynthetics, North America, Oil sands, People, Reclamation, Tailings, Waste Rock, tagged closure, cold cover, et covers, fmea, goesynthetics in mining, Gord McKenna, justin straker, mike o'kane, UMTRA, valley and ridge covers on April 8, 2014 | Leave a Comment »
Spent today in a course on Covers in Cold Climates. The course is part of the seminar to follow tomorrow and Wednesday on the same topics. Arranged by InfoMine, it is being held in Whistler, which is a nice, but not spectacular place to have a conference—I prefer Banff or Vancouver. For the Fairmont Chateau Whistler is a pale reflection of those other grand hotels with the Fairmont name: a bland and ugly exterior that replicates in cheap detail the features of the hotel in Vancouver that it tries to emulate. (more…)
In selecting topics to blog about, my first choice is something that struck me today as new and interesting. Today the most fascinating new thing I learnt resulted from a visit by a young Irishman from Nuna Innovation Inc. He told me about a geosynthetics that I had not hitherto been aware of. (more…)
I have learnt a great deal from the salesmen of commercial products to the mining industry. I am always pleased to welcome them to my office when they email or phone and ask if they can come see me on a blatant marketing visit. For it was Ralph B. Peck, one of the fathers of soil mechanics, now called geotechnical engineering, who said that we should read the adverts in the magazine before we read the technical articles; he said that we will learn more from the ads about what is current, new, and innovative than from papers written years before in order to progress through the peer review system. (more…)
A simple cover of rock is what we constructed at the 24 UMTRA piles. Over the radioactive wastes and radon barrier was a layer of rock. Many thought this ugly. Personally I think a pile of rock standing proud in the landscape is beautiful: not natural, but so robust and textured that it impresses the mind and eye.
Rock was used to control, nay eliminate erosion, for 1,000 years and more. The rock was placed to resist the forces of erosion by waters rushing down the cover. The rock type was selected to resist decay for as long a period as we had courage to predict. (more…)
It is snowing in Vancouver. Nothing sticking to the roads, but the trees are white and beautiful. Nothing much to do outside or inside for that matter, so just a few thoughts on mine waste disposal facility covers.
Slimes & Cement
The best cover is no cover. If you can use the upper tailings or waste rock as the as the growth medium in which a stand of climax vegetation will flourish, you have the best cover. (more…)