Asbestos Flashcards

1
Q

Types of asbestos minerals

A

Chrysotile, amosite, crocidolite, actonolite, anthophylite, tremolite

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2
Q

Serpentine group of asbestos mineral

A

Chrysotile - curly fibres

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3
Q

Amphibole asbestos minerals

A

Straight fibres, everything but chrysotile

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4
Q

Properties of asbestos

A
  1. high tensile strength
  2. chemical and thermal stability
  3. high flexibility
  4. low electrical conductivity
  5. large surface area
  6. fire resistance
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5
Q

Uses of asbestos

A
  • insulation
  • cement building materials
  • fibre cement boards
  • roofing
  • textiles
  • gaskets and pads for cars
  • brake linings
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6
Q

Asbestos in homes

A
  • furnaces and heating
  • car and truck brake pads
  • cement and plaster
  • insulation
  • floor and ceiling tiles
  • siding
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7
Q

White asbestos

A

Chrysotile

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8
Q

90% of commercial asbestos

A

Chrysotile

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9
Q

Asbestos that breaks down in the body the easiest

A

Chrysotile

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10
Q

Blue asbestos

A

Crocidolite

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11
Q

Most dangerous type of asbestos - hardest to break down in the body

A

Crocidolite

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12
Q

Type of asbestos with resistance to acid, but is no longer mined

A

Crocidolite

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13
Q

Dark green asbestos

A

Actonolite

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14
Q

Sharp asbestos fibres

A

Actonolite and Tremolite

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15
Q

Responsible for many individuals asbestos-related illnesses

A

Actonolite and Tremolite

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16
Q

Second most common type of asbestos in buildings

A

Amosite

17
Q

Sharp needle-like fibres that become trapped in lungs

A

Amosite

18
Q

Found in products with vermiculite and talc

A

Anthopyllite

19
Q

Ranges in colour from white to brown

A

Anthopyllite

20
Q

Top chrysotile producer (1 million metric tonnes in 2015)

A

Russia, major mine in Asbest

21
Q

China chrysotile production in 2015

A

400,000 tonnes

22
Q

Third and fourth top producers of chrysotile

A

Brazil, Kazakhstan

23
Q

Top 3 importers of chrysotile (in order)

A

India, China, Indonesia

24
Q

Asbestos is found in what type of rock

A

Metamorphic

25
Q

Countries where asbestos is mined

A

Brazil, Columbia, Russia, China, Kazakhstan, Zimbabwe

26
Q

Asbestos mines were still operating in Quebec

A

Until 2011

27
Q

World’s largest asbestos mine until its closure in 2011

A

Jeffery Mine in Quebec

28
Q

Non-cancerous effects of asbestos

A
  1. asbestosis
  2. pleural plaques
29
Q

Cancerous effects of asbestos

A
  1. lung cancer
  2. mesothelioma
30
Q

Mesothelioma

A

Rare cancer of the tissue that surrounds the lung

31
Q

Mortality rate of mesothelioma

A

60% of suffers within a year, five-year survival rate of less than 7%

32
Q

Asbestos is banned in how many countries

A

55

33
Q

Where is asbestos banned

A

Japan, Australia, and all countries in European Union

34
Q

2018 in Canada

A

Asbestos on full ban

35
Q

Asbestos in Calgary

A

Homes built before 1990 (almost always before 1980):
- pipes and drywall
- insulation
- floor tiles
- roofing and siding
- heating systems (air ducts)
- plumbing