A black solid substance formed from ancient plant remains buried underground; used as a fuel and chemical raw material.

place where coal is extracted; colliery

Coal gas, natural gas, or liquefied petroleum gas used as fuel for heating and cooking

coal used as a fuel source

raw coal; coal that has been mined but not yet screened, washed, or processed; also called [[混煤|混煤|hun4 mei2]]

to extract coal from a coal seam

a layer of coal found between underground rock layers; coal bed

a colorless liquid fuel distilled from petroleum used for lighting and heating

dark organic material made of decomposed plant matter found in bogs; used as fuel or fertilizer; also known as [[泥炭|泥炭|ni2 tan4]]

a coal pit or small coal mine, often one using traditional or non-industrial mining methods

large area where layers of coal are found and can be mined

gas trapped in layers of coal underground

To clean and sort raw coal by removing impurities like dust and stones while grading it into different sizes, often through washing.

a type of soft coal with high bonding properties used primarily to produce coke for steelmaking

Waste rock or stony material associated with coal seams, typically greyish-black, hard, and containing low levels of carbon.

Small balls or briquettes made by mixing coal dust with clay and water, used as fuel.

a metal cylinder or tank used for storing liquefied petroleum gas (LPG)

The amount of coal consumed by a piece of equipment to produce a unit of work or energy; coal consumption

A stove that uses coal as fuel.

a high-quality coal with a high carbon content and a metallic luster that produces very little smoke when burned

a cylinder-shaped household coal briquette made from coal dust and clay, named for its multiple vertical holes that resemble a honeycomb

A cooking stove or range that uses gas as fuel

To wash raw coal with water to remove impurities such as dust and rocks and to sort the coal into different grades; an older term for [[选煤|選煤|xuan3 mei2]]

A lamp or light that uses gas as fuel for illumination

A dark brown, thick, smelly liquid produced by distilling coal; used as a raw material for fuel, dyes, and medicines.

soft coal with high carbon content that produces thick smoke when burned; used primarily for fuel or making coke

smoke from burning coal; soot particles caused by incomplete combustion

brown coal; a type of low-grade coal that is dark brown or grayish-black with high moisture content

coal ash; soot

coal in large pieces or lumps; bitumenite

coal cinder; slag or slack left after coal has been burned

A stove or furnace that burns gas as fuel, used for cooking or heating; a gas range

a device used to measure the volume of fuel gas such as coal gas or natural gas passing through a pipe

low-quality coal containing many minerals that looks like rock; used for fuel or to produce chemical fertilizers

a large storage container or bin for coal

bituminous coal; soft coal

A lamp that uses kerosene as fuel to provide light.

anthracite; high-quality hard coal

a type of bituminous coal with high volatility used for making coke; often mixed with other types of coal to prevent damage to oven walls during expansion

brick-shaped block of coal made by mixing coal dust with water and clay, used as fuel or for making coke

a flammable and toxic gas produced by passing steam over hot coal or coke, consisting mainly of carbon monoxide and hydrogen; used as a fuel and chemical raw material

A type of bituminous coal with a high carbon content and poor caking properties, often mixed with other types of coal to produce coke.

A pit or excavation used for mining coal; a colliery.

a type of bituminous coal used to produce gas, tar, and high-quality coke for industrial use

A shaft or pit used for mining coal, including open-pit, vertical, horizontal, and inclined shafts

powdered coal; grime from coal

A stove that uses kerosene as fuel

a coal briquette or piece of coal that has been only partly burned