sj | ||
|
User Name | Thread Name | Subject | Posted |
GUEST,George | Number nine coal? (48) | RE: Number nine coal? | 05 Sep 11 |
No. 9 Coal refers to the depth underground where the coal was mined. In other words No. 13 coal is at a higher elevation than No. 9, and No. 5 is at a deeper elevation, and so forth and so on..It was also a predominate coal stream that fed Illinois, W. Virginia, Ohio and Kentucky.... |