- Slides: 15
Three Types Strip Mining Open Pit Mining Underground Mining
Strip Mining Used to get minerals like coal and oil sands that are located near the surface. 1. Overburden (trees, rock, soil) is removed. 2. Blasting (blowing stuff up with dynamite) may be needed 3. Minerals taken away by truck
Open Pit Mining Used to get stuff that’s still close to the surface, but may reach deeper into Earth 1. Overburden removed 2. Holes are drilled 10 -15 meters deep and filled with explosives. Rocks blown up. 3. Ore loaded into huge trucks and processed.
Open Pit Mining
Underground Mining Used to find ores deep inside the Earth. 1. Miners take an elevator down to the working area. 2. Holes are drilled in the rock, filled with explosives 3. Rock is blasted apart. 4. After blast, area is inspected, and weak parts are supported. 5. Rock is brought to an underground crusher, which separates ore, then lifted up to surface.
Manitoba produces 28. 3% of Canada's nickel 16. 4% of Canada's cobalt 10. 2% of Canada's copper 11. 4% of Canada's zinc 4. 1% of Canada's gold 100% of Canada's cesium, lithium and tantalum 33% of Canada's selenium 6. 1 % of Canada's silver 44% of Canada's tellurium
Issues Facing Canada’s Mining Industry
Acid Precipitation Six of the ten biggest polluters in North America are smelters and refineries in Ontario, Quebec, and Manitoba. Cleaning up pollution is the mining company’s job, and it’s expensive.
Abandoned mines Companies need to clean up dig sites after they’re done. Planting trees, fixing landscape.
Employment problems Despite a boom in the industry, youth are rarely attracted to working in the mining field. The mining industry needs young workers, but Canadian youth are more attracted to high-tech jobs than working in mines.
New mineral deposits discovered in other countries Other countries often have lower labour costs, and keep their production costs low. In order to compete, Canadian companies need to find ways to save money Often, they fire people and use machines to do the work.
Mining towns depend on mines for existence When a mine closes, the effect on jobs can be terrible. Often, entire towns shut down, because the mine that supported the economy shut down.