Word: ores
(lookup in dictionary)
(lookup stats)
Dates: during 2000-2009
Sort By: most recent first
(reverse)
...from above ground--just a cluster of green, corrugated-metal buildings, a company lodge and an airstrip--but the mine is an industrial marvel. The rocks underground average 21% pure uranium, with pockets as concentrated as 80%, far richer than the typical 1% deposits at other mines. The ore at McArthur River is the richest in the world and is far too radioactive to handle conventionally; the miners extract it by remote control, using giant boring machines and scoop trams instead of pickaxes and shovels...
...hard hat and rubber boots, a radiation detector and a shoulder harness with a pair of joysticks that he manipulated through his heavy work gloves. The scoop tram looked like a dump truck with the cab lopped off. On solid-rubber tires 5 ft. high, it carried freshly mined ore in soccer-ball-size chunks to the "grizzly," the big grated dumping shaft, where the rocks begin their journey to the mill...
...only two dozen or so miners at work underground at McArthur River. Where Powder works, it's as dry as a bone, but a few hundred feet away, in a neighboring tunnel, a perpetual fine rain falls. The porous sandstone that encases the mine's ore zone is saturated, even in winter, with water melting from the frozen surface. To keep the water from pouring into the mining shafts, Cameco's engineers have pulled off a remarkable feat: using one of the world's largest refrigeration plants, they have literally frozen the ground immediately surrounding the mine. Within...
...technological innovations at McArthur River. The primary one is the method of production: known as "raisebore" mining, it has been commonly used to dig vertical elevator or ventilation shafts for close to 20 years. But before McArthur River came online in 1999, it had never been used to mine ore...
Crooks, a Government concentrator in Kirkland House, hails from Klamath Falls, Ore., a farming town of roughly 25,000 people. The youngest of four daughters of construction workers, she graduated from a high school that she describes as “70 percent below the poverty line...