Feeds:
Posts
Comments

Archive for the ‘Tailings’ Category

DSC01702

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…)

Read Full Post »

DSCF2355

Constructing covers over mining wastes at sites in cold climates involves consideration of these factors that are unique to cold climates: (more…)

Read Full Post »

tumblr_n26c05nGZl1qcla2no1_500[1]

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…)

Read Full Post »

DSC01817

The title of this posting translates as Mine Water and Chemical Balance Analysis.  Today, EduMine posted at this link the Spanish language version of what has become a rather popular online course. (more…)

Read Full Post »

mooi 52942b5236526[1]

Most engineers have no idea what the strength of a soil or tailings implies.  Let me write a little about the physicality of soil and tailings of a given strength. (more…)

Read Full Post »

feature image

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…)

Read Full Post »

Case History

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…)

Read Full Post »

DSCF2291

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…)

Read Full Post »

tumblr_mnhcodnr7d1rv7wcro1_500[1]

From Linda Hinshaw of the Department of Civil & Environmental Engineering at Colorado State University here is news of some of the research underway in the department.   (more…)

Read Full Post »

 DSCF2264

The seminar on Cold Cover is upcoming in April in Whistler.  What a great opportunity for a few days of leisure and information in a beautiful place.  Just the thing for the privileged few in mining who can persuade their boss that they need & deserve the exposure to ideas and experts that would otherwise involve much web searching and downloading. I will be there — if this blog posting does not get me banned from attending.  For my challenge to the experts presenting is this: negate what I said so many years ago.  Do not obfuscate; do not formulate pusillanimous alternative to prove you are original; and tell us the truth. (more…)

Read Full Post »

Older Posts »

Follow

Get every new post delivered to your Inbox.

Join 436 other followers