Mining
Published on Nov 18, 2015
No Description
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
WHAT IS MINING?
Photo by tj.blackwell
Mining is the extraction of valuable minerals or other geological materials from the earth from an orebody, lode, vein, seam, or reef, which forms the mineralized package of economic interest to the miner. (They make money)
Photo by Daan!
Open pit strip mining is when you dig a pit, about 30 feet down. Then mine strips off of it. Like branches off a tree.
Photo by zilverbat.
WHAT ARE THE PROS AND CONS TO OPEN PIT MINING?
Photo by Julien Harneis
Pro: It is very effective
Con: It may cave in.
Photo by Jason Michael
WHAT ARE TAILING PONDS?
Photo by Stuck in Customs
A tailings pond is an engineered dam and dyke system – is used as a settling basin/storage container for the mixture of water, sand, clay and residual oil that is left over after oil sands processing. Once in the pond, the sand quickly sinks to the bottom, and the water from the top three metres is recycled.
Photo by Seryo
WHAT IS SHAFT MINING?
Photo by Dolor Ipsum
Shaft mining or shaft sinking refers to the method of excavating a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom.
Photo by i k o
Pro: Shaft mining allows a mine operation to be largely 'hidden' having only adits or headframes protruding above the surface. This enables the land above the zone of mining to be reclaimed for other uses, after the mining has ceased, so much easier than in the case of an open pit.
Photo by [Duncan]
