1989

Nickel NOLD ON TO YOUR SEATS

After eight years of nearly continuous worldwide expansion of nickel demand, many analysts seem to assume that the cyclic nature of the nickel industry is a phenomenon of the past. If we examine the g…


50 Years Ago KEEP ROCK BURSTS OUT OF LABOR POLITICS

One of the worst rock bursts ever experienced in Ontario occurred last week at Kirkland Lake with tragic consequences. As a result of the blast seven men were entrapped, four of these lost their lives…


50 Years Ago NEW KIRKLAND FIND HELD IMPORTANT

A discovery of importance — the first brand new surface ore discovery in the Kirkland Lake camp for years — appears indicated on the Amalgamated Kirkland Gold Mines property, adjoining south of Maca…


Innovations MECHANICAL TUNNELLING

The battle lines are being drawn Tfor the world tunnel-boring- Tmachine (TBM) market. And in North America, the Canadian hardrock mining industry is a significant part of that market. Using surface di…


JOB ROTATIONS

When Rio Algom started the mine, it had to train the vast majority of its operators. “We had only two shovel operators, one driller and one blaster,” mine superintendent Gary Smith recalls. Since this…



What’s New Hardrock Shovel

A diesel-powered, heavyweight hydraulic mining excavator, with a 11.5-cu-m bucket, has been introduced by Harnischfeger of Milwaukee, Wis. The Model 1550 shovel comes equipped with a Cummins KTTA 38 C…


50 Years Ago SIGMA IS HEALTHY AT DEPTH

The ore measures at Sigma, Dome’s subsidiary in Quebec, are continuing to depth in strong fashion, The Northern Miner understands. Sinking the main shaft was recently completed to 2,125 ft. for eight …


osscuts BIG IS BEUTIFUL

In narrow-vein underground gold mining, recent equipment innovations have reflected “the small-is- beautiful” principle. In open pit coal mines, behemoths rule. Take, for example, the next generation…


Letters IS THIOUREA DEADLY?

In the second paragraph of Norm Avery’s article, “The Thiourea Option” (May, 1989, issue), he states in reference to thiourea, “it is not carcinogenic in man * * .” I am seeking the basis for this rat…


Old-timers

I was interested by your open query in the August, 1989, issue, as to the longest-operating mine in the world, because I have worked at the Dome mine in northern Ontario and also at two mines in Europ…


Zinc SOFT LANDING

Zinc market conditions are extremely tight. The sharp slowdown in the auto sector combined with less buoyant consumer spending overall will act to decrease zinc demand sharply * The new mines coming o…


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