Re: Is this the best tactic-default
in response to
by
posted on
Dec 12, 2007 01:29PM
15 Gold properties & 1 Molybdenum resource - Beardmore & Geraldton, N/W Ontario.
I think all that complain about lackof production need to read up on this sector and educate themselves.
It takes years and years for ANY company to make the move from explorer to producer. Permits, environmental issues and financing create these delays. You don't just say, Hey, I'm going to produce my ore and start producing that ore the next day. Below is an excerpt I read today from Idaho Mining site. And although we are in Canada, many of the same issues apply.
"Modern prospecting begins with field studies conducted by the Idaho Geological Survey. Data from these studies give us clues as to how and where mineral deposits are formed.
Using their knowledge of the Earth's formation and state-of-the-art Geological Survey Maps, modern-day prospectors can concentrate their exploratory efforts at precise locations. The rock captured in the center of a drill, called a core sample, is examined by geologists for signs of mineralization. In Idaho, these exploratory projects are often restricted by weather and cost; an average of a quarter-million dollars apiece. Land disturbed by exploration activity is reclaimed, whether or not minerals are found. After hundreds of bore holes are drilled and thousands of core samples are examined and tested, a computer model of the ore body is developed.
The mining engineers first determine the size, shape and quality of the ore body and then select the best way to mine it. They must also estimate the quantity of the mineral within the ore body and determine how many years it will take to mine.
Before a single shovel of dirt is moved, a variety of environmental and engineering studies must be conducted. It may take two to five years and millions of dollars to complete this second phase. Mining is heavily regulated by both the state and federal governments. An Environmental Impact Statement is required along with state and federal permits and a period of time set aside for public comment. Today, mining companies must develop a long-term plan which includes not only the mining process, but a program to rehabilitate the land once the mining stops.
Once the permitting process is complete and the mine plan approved, the mine construction phase begins. Roads must be built to the site. Mills for processing ore are constructed.
When constructing an underground mine, vertical or have inclined shafts must be sunk or horizontal tunnels or adits bored to reach the mineral vein. Mine construction can take several years and employ several hundred people. Underground mining is virtually a world unto itself. Productive silver mines in Idaho are over a mile deep and require very specialized people and equipment. Safety is paramount in the underground world.
Once the rock is loosened up by blasting, shovel operators selectively load ore into large trucks bound for the concentrating mill. The most common form of concentrator is the flotation mill. After being crushed, the ore passes through a series of large grinding mills. These giant drums reduce the rock to particles smaller than flour. These tiny particles are mixed with water and chemicals and sent through a series of flotation circuits. The mineral particles stick to the bubbles, float to the top and are skimmed off. Ore entering the first flotation circuit can contain as little as one-tenth of one percent mineral. By the time the concentrate emerges from the last flotation circuit, it can be more than 95 percent pure. Low-grade gold and silver ores are concentrated by a process called leaching. A chemical solution is mixed with the ore to dissolve the precious metals. In a heap leach operation, ore is crushed and stacked on a thick clay pad covered with a leak-proof liner. The chemical solution slowly seeps through the ore. The solution, now rich in dissolved gold and silver, is collected and processed."