Suggestion Box A PORTABLE SOLUTION
With the proliferation of flow-through financing, some exploration companies have found it nearly impossible to find a drill rig. In the winter drilling season last year, at least one junior company, …
News
Cross-Cuts FLOATING ON SUPERLATIVES
Harnischfeger’s new and massive dredge floats on superlatives (and water, of course): largest; most powerful; its 50-cu-yd clamshell bucket can plop immense mucky loads into a 6,000- cu-yd companion s…
A BREAKNECK PACE Golden Rose
At the turn of the century, gold nuggets were found on the shore of a lake 60 miles northwest of North Bay, Ont. Four decades passed before anyone formally mined the deposit. That operation, known as …
WHAT’S NEW Bigger Buckets on Cat Loaders
Four new models of Caterpillar wheel loaders deliver increased horsepower and rimpull for improved performance, over four former models, the company reports. Larger-capacity buckets with bolt- on edge…
Research FUZZY LOGIC
Comdale Technologies of Toronto has developed an expert system to control the flotation circuit at Cominco’s Polaris mine, in the Northwest Territories. Genex, an expert system tool kit, was used to d…
50 Years Ago January, 1938 METALS LEAD RECOVERY MOVEMENT
The tide of base metal consumption, which had been ebbing steadily since last mid-summer, may resume its flow this week. The reason is that markets for copper, lead and zinc are springing into activi…
WHAT’S NEW Another Small Scoop
Wagner Mining Equipment of Portland, Ore., has joined John Clark (see What’s New in our December issue) in offering an electrical-powered load- haul-dump machine. Called the Mini-scoop, Wagner’s unit …
A BREAKNECK PACE Pan-Empire
In the fall of last year, an A.C.A. Howe company, Ateba Mines of Toronto, started screening and sorting old mine dump material grading as low as 0.01 oz gold per ton. This material, from the old North…
A BREAKNECK PACE Mobrun
Exploration on Audrey Resources’ Mobrun deposit started with a big splash — a public announcement in late 1985 that Audrey and Corporation Falconbridge Copper (since renamed Minnova Inc.) would spend…
A BREAKNECK PACE Star Lake
The Star Lake gold mine represents the first such mine in Saskatchewan in more than 40 years. Although small in both reserves and milling rate, the high grade operation combined with relatively simple…
A BREAKNECK PACE Namew Lake
Hudson Bay Mining & Smelting has adopted what President Lloyd Nilsen calls a “black-earth” exploration policy, which means all anomalies that turn up during airborne geophysical work will be tested by…
WHAT’S NEW Borescope
A visual inspection tool designed to provide accurate diagnosis of problems inside engines, transmissions and final drives on a variety of mining equipment is now available from Lenox Instrument of Tr…