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Mines and Mining

Gold in a piece of quartz from Manitoba

Gold in a piece of quartz from Manitoba (James St. John [CC BY], Wikimedia Commons)

Gold in a piece of quartz from Manitoba

Gold in a piece of quartz from Manitoba (James St. John [CC BY], Wikimedia Commons)

Let's Talk Science
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Learn about mines and mining in Canada

Mining is the process of removing minerals from the Earth. These minerals are usually found in rock. Rock containing minerals of interest we call ore.

Mining takes place at mines. There are two types of mines.

Surface mines are used to remove ore containing minerals found naturally near the surface of the Earth. In surface mines, people get at the ore by digging a big open pit.

Shown is a colour photograph of a large, wide pit with a road and several trucks inside.
A typical surface mine showing the open pit (Williams Open Pit Mine) (Source: © Lesley Hymers. Used with permission).
Image - Text Version

Shown is a colour photograph of a large, wide pit with a road and several trucks inside.

The camera is at the edge of the oval shaped pit. It is so large it takes up three quarters of the image. There is a thin strip of green grass near the horizon, and grey, cloudy sky above. 

The sides of the pit are grey and shaped like steps or the tiered seats in a stadium. The widest tier is at the top. Each tier gets smaller until the flat bottom. A gravel road circles around the inside of the pit, from top to the bottom. Here, several large trucks appear tiny in the distance.

Underground mines are used when the ore is found deep beneath the Earth’s surface. A series of tunnels are used to access the ore.

Shown is a colour aerial photograph of large structures near a rock cliff.
An underground mine illustrating the surface footprint (Kidd Operation-Kidd Mine) (Source: © Glencore Canada Operations. Used with permission).
Image - Text Version

Shown is a colour aerial photograph of large structures near a rock cliff.

The image includes a very large section of the landscape. There is dense forest in the distance, on the horizon, and hazy blue sky above. 

A two-lane gravel road curves from the forest, along the right edge, and bottom edge of the image. Two more roads run from a large parking lot to the bottom right corner. The parking lot is dotted with cars that look like tiny specks. The rest of the land between the roads and the cliff is covered with large, industrial structures. There are four wide, low rectangular buildings, two brown conical buildings with long grey pipes extending from them, two tall, thin, grey, windowless towers and two smaller green towers with green pipes extending from them.

Check out this interactive to learn about the steps in mining.

 

There are many stages in the life of a mine. These stages are called the mine life cycle. The stages include exploration, development, operation and closure/reclamation.

Exploration is the first stage of the cycle. It involves doing research and going out into the field. Both prospectors and scientists go out on the land to search for rocks and minerals.

Rocks are analyzed to determine if they contain the minerals people are looking for. If the analysis shows that the minerals occur in a large enough quantity, additional work will be done. Only a small number of these mineral finds will go on to become mines.

Shown is a colour photograph of a person holding a piece of rock.
A geoscientist looks for minerals in a rock sample (Source: ©Northgate Minerals. Used with permission).
Image - Text Version

Shown is a colour photograph of a person holding a piece of rock.

The person is wearing a red and yellow reflective vest. They are kneeling next to a grimy wooden box with a baseball cap sitting on it. The rock they are holding is long, thin, and dark grey. 

In the background is a red and white painted helicopter on a grassy hill. The sky behind is dark grey with clouds.

 

Exploration

Exploration is the first stage of the cycle. It involves doing research and going out into the field. Both prospectors and scientists go out on the land to search for rocks and minerals.

Rocks are analyzed to determine if they contain the minerals people are looking for. If the analysis shows that the minerals occur in a large enough quantity, additional work will be done. Only a small number of these mineral finds will go on to become mines.

Shown is a colour photograph of a person holding a piece of rock.
A geoscientist looks for minerals in a rock sample (Source: ©Northgate Minerals. Used with permission).
Image - Text Version

Shown is a colour photograph of a person holding a piece of rock.

The person is wearing a red and yellow reflective vest. They are kneeling next to a grimy wooden box with a baseball cap sitting on it. The rock they are holding is long, thin, and dark grey. 

In the background is a red and white painted helicopter on a grassy hill. The sky behind is dark grey with clouds.

 

Development involves further research and analysis.

This includes:

  1. developing a plan for the mine;
  2. discussions with government and communities located near the proposed mine to make sure that their needs and requirements are addressed;
  3. applying for government permits and licenses;
  4. and final evaluation of the proposed mine. Depending on the outcome of this step, the decision can be made to build the mine.

Once the mine has been constructed, it moves into the operation stage.

Development

Development involves further research and analysis.

This includes:

  1. developing a plan for the mine;
  2. discussions with government and communities located near the proposed mine to make sure that their needs and requirements are addressed;
  3. applying for government permits and licenses;
  4. and final evaluation of the proposed mine. Depending on the outcome of this step, the decision can be made to build the mine.

Once the mine has been constructed, it moves into the operation stage.

In the operation stage, rock is excavated. In some places, large excavating machines drill into rock surfaces. In other places, explosives are used to break up rock.

Shown is a colour photograph of a large vehicle inside a mine shaft.
Drills are used in underground and surface mines to prepare the rock face for blasting (Source: © Triple Boom Jumbo Drill - Sandvik Mining and Construction. Used with permission).
Image - Text Version

Shown is a colour photograph of a large vehicle inside a mine shaft.

The vehicle is red and has three long, mechanical arms. They stretch out in front and towards each side, around where the camera is.  The ends of each arm are small cylinders. The cab of the vehicle is small, at the top of a long pole near the rock roof of the mine. At least four large tires are visible under fenders at the bottom of the vehicle, on the wet, rocky floor.

The ore is taken to a mill and processed. The length of this stage in the life cycle depends on how much mineral ore is present at the mine.

Operation

In the operation stage, rock is excavated. In some places, large excavating machines drill into rock surfaces. In other places, explosives are used to break up rock.

Shown is a colour photograph of a large vehicle inside a mine shaft.
Drills are used in underground and surface mines to prepare the rock face for blasting (Source: © Triple Boom Jumbo Drill - Sandvik Mining and Construction. Used with permission).
Image - Text Version

Shown is a colour photograph of a large vehicle inside a mine shaft.

The vehicle is red and has three long, mechanical arms. They stretch out in front and towards each side, around where the camera is.  The ends of each arm are small cylinders. The cab of the vehicle is small, at the top of a long pole near the rock roof of the mine. At least four large tires are visible under fenders at the bottom of the vehicle, on the wet, rocky floor.

The ore is taken to a mill and processed. The length of this stage in the life cycle depends on how much mineral ore is present at the mine.

The final stage of the mine life cycle involves closure and reclamation. This includes ending the operation of the mine. It also involves removing all buildings and reestablishing the vegetation on the land.

Shown are two colour photographs of the same landscape, labelled "Before" and "After."
Left: Coal mine in use. Right: Coal mine after land reclamation (Source: Peabody Energy, Inc. via Wikimedia Commons).
Image - Text Version

Shown are two colour photographs of the same landscape, labelled "Before" and "After."

The photograph on the left shows a large yellow vehicle with long green mechanical arms, at the bottom of a wide gravel pit. The land around the vehicle is piles of greyish brown rocks and gravel. There are green hills and a blue mountain range in the far distance. 

The photograph on the right shows a green hillside with a stand of trees in the centre. There are more trees in the foreground and background. A small part of a blue mountain range can be seen in the far distance.

 

Closure and Reclamation

The final stage of the mine life cycle involves closure and reclamation. This includes ending the operation of the mine. It also involves removing all buildings and reestablishing the vegetation on the land.

Shown are two colour photographs of the same landscape, labelled "Before" and "After."
Left: Coal mine in use. Right: Coal mine after land reclamation (Source: Peabody Energy, Inc. via Wikimedia Commons).
Image - Text Version

Shown are two colour photographs of the same landscape, labelled "Before" and "After."

The photograph on the left shows a large yellow vehicle with long green mechanical arms, at the bottom of a wide gravel pit. The land around the vehicle is piles of greyish brown rocks and gravel. There are green hills and a blue mountain range in the far distance. 

The photograph on the right shows a green hillside with a stand of trees in the centre. There are more trees in the foreground and background. A small part of a blue mountain range can be seen in the far distance.

 

Exploration is the first stage of the cycle. It involves doing research and going out into the field. Both prospectors and scientists go out on the land to search for rocks and minerals.

Rocks are analyzed to determine if they contain the minerals people are looking for. If the analysis shows that the minerals occur in a large enough quantity, additional work will be done. Only a small number of these mineral finds will go on to become mines.

Shown is a colour photograph of a person holding a piece of rock.
A geoscientist looks for minerals in a rock sample (Source: ©Northgate Minerals. Used with permission).
Image - Text Version

Shown is a colour photograph of a person holding a piece of rock.

The person is wearing a red and yellow reflective vest. They are kneeling next to a grimy wooden box with a baseball cap sitting on it. The rock they are holding is long, thin, and dark grey. 

In the background is a red and white painted helicopter on a grassy hill. The sky behind is dark grey with clouds.

 

Exploration

Exploration is the first stage of the cycle. It involves doing research and going out into the field. Both prospectors and scientists go out on the land to search for rocks and minerals.

Rocks are analyzed to determine if they contain the minerals people are looking for. If the analysis shows that the minerals occur in a large enough quantity, additional work will be done. Only a small number of these mineral finds will go on to become mines.

Shown is a colour photograph of a person holding a piece of rock.
A geoscientist looks for minerals in a rock sample (Source: ©Northgate Minerals. Used with permission).
Image - Text Version

Shown is a colour photograph of a person holding a piece of rock.

The person is wearing a red and yellow reflective vest. They are kneeling next to a grimy wooden box with a baseball cap sitting on it. The rock they are holding is long, thin, and dark grey. 

In the background is a red and white painted helicopter on a grassy hill. The sky behind is dark grey with clouds.

 

Development involves further research and analysis.

This includes:

  1. developing a plan for the mine;
  2. discussions with government and communities located near the proposed mine to make sure that their needs and requirements are addressed;
  3. applying for government permits and licenses;
  4. and final evaluation of the proposed mine. Depending on the outcome of this step, the decision can be made to build the mine.

Once the mine has been constructed, it moves into the operation stage.

Development

Development involves further research and analysis.

This includes:

  1. developing a plan for the mine;
  2. discussions with government and communities located near the proposed mine to make sure that their needs and requirements are addressed;
  3. applying for government permits and licenses;
  4. and final evaluation of the proposed mine. Depending on the outcome of this step, the decision can be made to build the mine.

Once the mine has been constructed, it moves into the operation stage.

In the operation stage, rock is excavated. In some places, large excavating machines drill into rock surfaces. In other places, explosives are used to break up rock.

Shown is a colour photograph of a large vehicle inside a mine shaft.
Drills are used in underground and surface mines to prepare the rock face for blasting (Source: © Triple Boom Jumbo Drill - Sandvik Mining and Construction. Used with permission).
Image - Text Version

Shown is a colour photograph of a large vehicle inside a mine shaft.

The vehicle is red and has three long, mechanical arms. They stretch out in front and towards each side, around where the camera is.  The ends of each arm are small cylinders. The cab of the vehicle is small, at the top of a long pole near the rock roof of the mine. At least four large tires are visible under fenders at the bottom of the vehicle, on the wet, rocky floor.

The ore is taken to a mill and processed. The length of this stage in the life cycle depends on how much mineral ore is present at the mine.

Operation

In the operation stage, rock is excavated. In some places, large excavating machines drill into rock surfaces. In other places, explosives are used to break up rock.

Shown is a colour photograph of a large vehicle inside a mine shaft.
Drills are used in underground and surface mines to prepare the rock face for blasting (Source: © Triple Boom Jumbo Drill - Sandvik Mining and Construction. Used with permission).
Image - Text Version

Shown is a colour photograph of a large vehicle inside a mine shaft.

The vehicle is red and has three long, mechanical arms. They stretch out in front and towards each side, around where the camera is.  The ends of each arm are small cylinders. The cab of the vehicle is small, at the top of a long pole near the rock roof of the mine. At least four large tires are visible under fenders at the bottom of the vehicle, on the wet, rocky floor.

The ore is taken to a mill and processed. The length of this stage in the life cycle depends on how much mineral ore is present at the mine.

The final stage of the mine life cycle involves closure and reclamation. This includes ending the operation of the mine. It also involves removing all buildings and reestablishing the vegetation on the land.

Shown are two colour photographs of the same landscape, labelled "Before" and "After."
Left: Coal mine in use. Right: Coal mine after land reclamation (Source: Peabody Energy, Inc. via Wikimedia Commons).
Image - Text Version

Shown are two colour photographs of the same landscape, labelled "Before" and "After."

The photograph on the left shows a large yellow vehicle with long green mechanical arms, at the bottom of a wide gravel pit. The land around the vehicle is piles of greyish brown rocks and gravel. There are green hills and a blue mountain range in the far distance. 

The photograph on the right shows a green hillside with a stand of trees in the centre. There are more trees in the foreground and background. A small part of a blue mountain range can be seen in the far distance.

 

Closure and Reclamation

The final stage of the mine life cycle involves closure and reclamation. This includes ending the operation of the mine. It also involves removing all buildings and reestablishing the vegetation on the land.

Shown are two colour photographs of the same landscape, labelled "Before" and "After."
Left: Coal mine in use. Right: Coal mine after land reclamation (Source: Peabody Energy, Inc. via Wikimedia Commons).
Image - Text Version

Shown are two colour photographs of the same landscape, labelled "Before" and "After."

The photograph on the left shows a large yellow vehicle with long green mechanical arms, at the bottom of a wide gravel pit. The land around the vehicle is piles of greyish brown rocks and gravel. There are green hills and a blue mountain range in the far distance. 

The photograph on the right shows a green hillside with a stand of trees in the centre. There are more trees in the foreground and background. A small part of a blue mountain range can be seen in the far distance.

 

Canada is a large country where many rocks contain valuable minerals. Mining takes place in 12 provinces and territories across the country. The only province without mining is Prince Edward Island. Canada is a global leader in mining. Canadian mines produce more than 60 different minerals and metals. The map below shows the location of mine types by province and territory.

Shown is a colour map of Canada labelled with letters.
Map of Canada illustrating the location of metals mines across the country (©2022 Let’s Talk Science based on an image by Mining.com).
Image - Text Version

Shown is a colour map of Canada labelled with letters.

The title "Mining in Canada" is in large black letters across the top of the illustration. In a column on the left side is a list of letters that represent metals. This reads: "A = Aluminum, C = Coal, Cu = Copper, Co = Cobalt, D = Diamond, G = Gold, I = Iron, L = Lead, M = Molybdenum, N = Nickel, P = Potash, Pa = Palladium, Pt = Platinum, S = Silver, T = Titanium, U = Uranium, Z = Zinc."

The water on the map is illustrated in blue. Canadian land is in green, and the land of other countries are in beige. Different shades of green are used to illustrate the different provinces and territories of Canada. 

Starting on the top left, Yukon is labelled with G, Cu, and S in the centre of the territory. The Northwest Territories is labelled with D, just above Yellowknife. Nunavut has G and I on the mainland and on the islands. 

Moving down to British Columbia, Cu, G, M, and C appear in the north, A on the coast, and Cu, G, M, L, Z, and C in the south. Alberta is only labelled with C, in the south. Saskatchewan is labelled with C and P in the south. Manitoba's labels are all in the northernhalf. These are N, Co, G, Cu and Z. 

Most of Ontario's labels are also in the north. These are G, Pa, Pt, C, Z, and D. There are three more in the south, near the Great Lakes. These are N, Co, and Cu. Most of Québec's labels are across the centre. These are G, Co, D, Z, A, and T. There is also a T in the south, near Québec City, and an N at the northern tip of the province. 

New Brunswick is labelled with Z, L, and P. Nova Scotia has a Z on the southern tip. In Newfoundland and Labrador, The northern part of Labrador is labelled with an N and the island of Newfoundland is labelled with G.

In Canada people mine for base metals, precision metals, diamonds and other minerals. Let’s look at some of these in more detail.

Base metals include metals such as iron, nickel, lead, zinc and copper. Base metal mines are located in many provinces and territories.

Iron ore is used to make steel. It is only mined in Quebec, Nunavut, Newfoundland and Labrador.

Shown is a colour photograph of a long, yellow, glowing rectangle on metal rollers.
Red hot piece of steel (Source: RicAguiar via iStockphoto).
Image - Text Version

Shown is a colour photograph of a long, yellow, glowing rectangle on metal rollers.

The rectangle is a bright, golden yellow, like a flame. It stretches from the bottom edge of the image, towards a set of stairs in the distance. These illustrate that the rectangle is very large. The area underneath it glows orange, and lights up the surfaces around. In the background the inside of a large industrial building is visible.

British Columbia produces the most copper in Canada. Copper is a very useful metal because it conducts electricity and heat. It is used in wiring, power generation and plumbing. It is also used to make pots and pans.

Shown is a colour photograph of four large rolls of thick metal wire.
Large spools of copper wire (Source: sykono via iStockphoto).
Image - Text Version

Shown is a colour photograph of four large rolls of thick metal wire.

The wire is thick, round, reddish gold, and shiny. Each roll is coiled around a large, black, conical object at the centre. At the top of each one, one end of the wire is lifted up and around, out of the image.

Precious metals include such metals as gold and silver. Gold and silver mines are located in British Columbia, Northwest Territories, Saskatchewan, Manitoba, Ontario, Quebec, Nunavut, Yukon, Alberta as well as Newfoundland and Labrador.

Ontario mines produce the most gold. Gold conducts electricity. It is used to make electronics and computers. Gold is also used to make jewelry, in dentistry and in medicine.

Shown is a colour photograph of six bright gold pieces sitting on brown rock.
Pieces of gold on the floor of a mine (Source: Oat_Phawat via iStockphoto).
Image - Text Version

Shown is a colour photograph of six bright gold pieces sitting on brown rock.

The gold is wet and gleams in the light. Each piece is shaped like a small pebble or piece of gravel. They are scattered in a small pool of water on a rough surface of beige and brown rock.

Manitoba mines produce the most zinc. Zinc is mixed with other metals to make brass. It is also used to make musical instruments and car parts.

Zinc can also be added to fertilizers to help crops grow better. Zinc in the form of zinc oxide is used to make sunscreen.

Sometimes, thin layers of zinc are put on iron or steel to prevent them from rusting. We call this process galvanization.

Shown is a colour photograph of a rough piece of grey, shiny material.
Nugget of zinc (Source: bagi1998 via iStockphoto).
Image - Text Version

Shown is a colour photograph of a rough piece of grey, shiny material.

The top of the piece is flat, smooth, and dark grey. The edges are rough, as if they have been cut or broken. The texture inside has long, thin, vertical structures. These catch the light, shining in shades of pale, metallic grey.

Uranium is an element used to generate electricity in nuclear generating stations. It is mined only in Saskatchewan. Uranium is an element that gives off energy naturally. This makes it a good source of fuel. Uranium fuel is radioactive. That’s why it can generate electricity.

Shown is a colour, aerial photograph of a large industrial site in a vast forest dotted with lakes.
McArthur River Uranium Mine in northern Saskatchewan (Source Turgan Tal[CC BY-SA] via Wikimedia Commons).
Image - Text Version

Shown is a colour, aerial photograph of a large industrial site in a vast forest dotted with lakes.
The beige ground of the site is in sharp contrast to the dark green trees and deep blue lakes around. A straight, beige road cuts through the forest on the top left. It leads to a series of square grey structures dug into the land. These are surrounded by the same beige as the road. In the centre, there are five bright green buildings and tall towers in a grid of roads. On the right is a large mound of dark grey soil or rock. In the foreground, a flattened mound of beige soil leads back down to the forest.

Diamonds are mined in the Northwest Territories, Ontario and Quebec. Canada first started mining diamonds in October 1998. This is when the Ekati Diamond Mine opened. It is about 300 kilometres northeast of Yellowknife.

As of 2022, Canada was the world's third largest diamond producer after Russia and Botswana.

Diamond is a very hard mineral that is resistant to chemicals. It is used as an abrasive, to make strong drill bits and in jewelry.

Ekati Diamond Mine. You can see three open pit mines on the left side/La mine de diamant Ekati. On peut voir trois puits à ciel ouvert à gauche
Ekati Diamond Mine. You can see three open pit mines on the left side (Source: Jason Pineau [CC BY-SA] via Wikimedia Commons).
Image - Text Version

Shown is a colour, aerial photograph of a huge industrial site in a landscape of tundra and lakes. 

The site looks like a tangled ball of grey string on the land. Several thin, snaking roads lead to a central grey mass. On the left of this mass are three perfectly round pits. They have been dug in concentric circles that get smaller as they get deeper. The bottoms of the pits are lost in shadow. Just above the top pit is a row of white buildings look tiny compared to the other structures.

In the background, green tundra dotted with lakes, stretches off to the horizon, hazy in the distance. There is one more round pit near the left edge of the image.

 

Mining Week
This page of the Mining Matters website has activities, videos and posters about mining in Canada.

References

The Canadian Minerals and Metals Plan. (n.d.). Mining in Canada.

Natural Resources Canada. (n.d.). Mining & minerals.

Sandlos, J., & Keeling, A. (2009, April 7). Mining. The Canadian Encyclopedia.

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