|
coaleducation.org
|
0 earned Badges No badges were found
Definitions (351)
1 |
1
1
beneficiation
The treatment of mined material, making it more concentrated or richer.
Meaning awaits approval from a moderator |
2 |
1
0
detectors
Specialized chemical or electronic instruments used to detect mine gases.
Meaning awaits approval from a moderator |
3 |
1
2
diffusion
Blending of a gas and air, resulting in a homogeneous mixture. Blending of two or more gases.
Meaning awaits approval from a moderator |
4 |
0
0
abutment
In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weig [..]
Meaning awaits approval from a moderator |
5 |
0
0
acid deposition or acid rain
made sources, primarily emissions of sulfur and nitrogen oxides resulting from fossil fuel combustion.
Meaning awaits approval from a moderator |
6 |
0
0
acid mine water
Mine water that contains free sulfuric acid, mainly due to the weathering of iron pyrites.
Meaning awaits approval from a moderator |
7 |
0
0
active workings
Any place in a mine where miners are normally required to work or travel and which are ventilated and inspected regularly.
Meaning awaits approval from a moderator |
8 |
0
0
adit
A nearly horizontal passage from the surface by which a mine is entered and dewatered. A blind horizontal opening into a mountain, with only one entrance.
Meaning awaits approval from a moderator |
9 |
0
0
advance
Mining in the same direction, or order of sequence; first mining as distinguished from retreat.
Meaning awaits approval from a moderator |
10 |
0
0
air split
The division of a current of air into two or more parts.
Meaning awaits approval from a moderator |
To view all 351 definitions, please sign in.