32 additional tons
It could mean the geological spread of coal seams in the ground. Or it could mean the process of getting the coal from the mines to the consumers.
compared to what. Percentage of coal used to make iron/steel, or percentage of coal shipped overseas, or percentage of coal used to make electricity, or....
The US had an abundance of coal and natural gas. It is estimated that 50% of the electricity generated in the US was from coal through burning fossil fuels.
In coal specs IDT means initial deformation temperature of Ash.
coal is mined in a series of rooms cut into the coalbed. Pillars of unmined coal are left intact, and serve to support the mine roof, as miners advance through the coal seam.
You can use the heavy machinery such as rigs to get the coal out of the ground
you get coal from the ground i saw it on a game once
reserves are coal still in the ground
A coal seam
The most prominent method of extracting coal from the ground is via mining.
Coal- In a mined so in the ground and oil also in the ground
a coal miner
When released, coal falls to the ground.
Coal mine is a found in an ground.
Coal still in the ground is remains named as 'coal'. It is a carboniferous rock.
A layer of coal under the ground is sometimes called a coal bed.
It's from the ground. Deep, DEEP in the ground.