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Coal Mining > Module 1: Introduction > Flashcards

Module 1: Introduction Flashcards

1
Q

As per SME, coal provides more than ____% of global electricity.

A

36

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2
Q

Percentage of coal used for electricity generation.

A

68%

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3
Q

Percentage of coal used for steel production.

A

7%

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4
Q

Over __% of the steel production today uses coal.

A

71%

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5
Q

Percentage of coal used for cement production.

A

4%

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6
Q

__________ coal produces odor and smoke free heat and are also less expensive than most standard heating options.

A

Anthracite

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7
Q

Coal is a combustible rock composed mainly of __________, ___________, and ___________.

A

C, H, & O

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8
Q

Coal is formed from vegetation consolidated between rock strata and altered by the combined effects of ________ & __________ over million of years to form coal seams.

A

heat, pressure

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9
Q

The Carboniferous period is also known as _____________________.

A

Age of Amphibians

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10
Q

During the Carboniferous period, O2 content was in its highest historical level at ____%.

A

35%

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11
Q

Types of coal arranged from the lowest to the highest carbon and heating value.

A

Lignite, Subbituminous, Bituminous, & Anthracite.

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12
Q

Types of coal arranged from the lowest to the highest moisture content.

A

Anthracite, Bituminous, Subbituminous, Lignite

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13
Q

Lower rank coal composes ___% of world resources while hard coal is __%.

A

47%, 53%

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14
Q

Percentages of the 4 types of coal out of the world resources.

A

Lignite-17%
Subbituminous-30%
Bituminous-52%
Anthracite-1%

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15
Q

2 Types of Bituminous Coal

A

Thermal (Steam) coal and Metallurgical (Coking) coal.

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16
Q

A group under the anthracite class that consists of 86-92% fixed carbon limits and 8-14% volatile matter limits.

A

Semianthracite

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17
Q

A group under the Bituminous class of coal that consists of less than 86% fixed carbon limits and more than 14 % volatile matter limits.

A

Low-Volatile bituminous

18
Q

It is a measure of the amount of non volatile carbon remaining in a coal sample.

A

Fixed carbon

19
Q

It refers to the water, carbon dioxide and sulfur dioxide, etc. present in a coal sample.

A

Volatile matter

20
Q

Coal that is burned to create steam that drives turbines and generators for electricity production.

A

Thermal/Steam Coal

21
Q

______________ coal is a key ingredient in steelmaking.

A

Metallurgical/coking coal

22
Q

A byproduct of coal used in cement manufacture and the wider construction industry.

A

Fly ash

23
Q

Coal is heated and pressurised with steam to produce __________ for domestic lighting and heating.

A

town gas

24
Q

Advantages of a coal

A 
Accessibility
Usability
Versatility
Affordability
Safety
25
Q

Disadvantages of coal

A

Non renewable
Health hazards
Environmental Impacts
High carbon emissions

26
Q

It was mined by simply picking it off beaches where it was deposited after being eroded from coal outcrops both above and below sea level.

A

Sea coal

27
Q

Coal exposed on a hillside was mined by following the coal seam, horizontally into the ground.

A

Drift mine

28
Q

The coal seam occurred below the ground surface and a shallow shaft was dug to reach the coal.

A

Bell Pit

29
Q

New coal mining method developed during the Industrial Revolution

A

Board and Pillar Method

30
Q

Long tunnels that were cut out of the coal seam, leaving pillars of coal to hold the roof.

A

Boards

31
Q

Shaft from which the miners went up and down and the coal came up.

A

Main/downcast shaft

32
Q

A second shaft built to prevent explosions, where at its bottom was a large fire for ventilation purposes.

A

Upcast shaft

33
Q

It ensured that a gust of air never blew down the upcast shaft and sent fire blazing into the mine.

A

Wind vane

34
Q

Walls built to force the air to travel through all the workings.

A

Stoppings

35
Q

Amount of coal left in the world (BOE)

A

4, 292, 901, 367, 086

36
Q

At current consumption levels, it is estimated that there are _____ years of coal left.

A

133

37
Q

Top 5 countries with the highest coal reserves arranged from highest to lowest.

A 
US
Russia
Australia
China
India
38
Q

Year on which the Philippines started producing coal.

A

1977

39
Q

Year on which the Philippines started importing coal.

A

1988

40
Q

Year on which the Philippines started exporting coal.

A

2007

41
Q

Coal mining company with the highest coal production in MT in the Philippines.

A

Semirara Mining and Power Corporation (SMPC)

42
Q

Differentiate a Resource from a Reserve.

A

A resource is that amount of a geologic commodity that exists in both discovered and undiscovered deposits—by definition, then, a “best guess.” Reserves are that subgroup of a resource that have been discovered, have a known size, and can be extracted at a profit.

Coal Mining (1 decks)

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