1989

50 Years Ago GEOLOGY FOR THE LAYMAN

We have heard comments occasionally that readers of mining news sometimes miss the significance of a report because they do not understand the implications of geological information given. Accordingly…


Specs cs **

** CONTINUOUS PROCESSES ** Solids/liquids separation has gone through quite a change over the past decade. This mineral processing circuit was once dominated by drum or disc filters. But the vacuum fi…


50 Years Ago COBALT WORTH MORE THAN SILVER

A delegation from Cobalt and surrounding areas seeking a bonus on silver for the Cobalt and Gowganda silver areas of Ontario has waited on the Dominion government, but the outcome has not been announc…


EMVIRONMENTAL POLICY UNVEILED

The following is the new environmental policy of The Mining Association of Canada: Member companies of the mac are committed to the concept of sustainable development, which requires balancing good st…



CYANIDE SOLUTIONS TIONS

An increasing number of Canadian gold mills are turning to chemical treatment processes to destroy and recycle toxic cyanide. Today, environmental protection laws in Canada are increasingly patterned …


Letters GROUND CONTROL

Your article entitled “King of Zinc,” regarding Brunswick Mining & Smelting (see April issue), contained several errors. In the section on ground control/rock mechanics, you say the cable bolts and st…


50 Years Ago CURRENCY PROBLEMS FOR GOLD MINES

Unless there is war, which now looks remote, the premium in United States funds may shortly diminish, leaving us little gain from a fall in sterling which looks likely to settle the pound quotation at…


50 Years Ago QUEBEC MINE BELT PROVES POPULAR

Mining in northwestern Quebec is a flourishing business. This fact is well appreciated by those engaged in the search for new metal orebodies, The Northern Miner found on a recent trip through the 100…


Managing STRESS TAKES A HOLIDAY

We have all recently been exposed to a jingle on television that asserts “I need a vacation, gotta get away. * * .” We can even relate to it, but what have we done about it? I was part of a discussion…


Muckling and hauling a continuous process

The earth-moving technology Tthat makes open pit and underTground coal, salt and potash mining so affordable is making its way into underground hardrock mines. Significant advances have been made in r…


Editor’s Note CLEANING UP

Treating the natural environment as an unquenchable toxic sponge never was a solution to mining’s waste disposal problems. The mining industry has slowly come to understand this, through the whip of g…


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