Eldorado Quadrangle
Mining in the Eldorado Quadrangle
The master fault of the Cottage Grove Fault System runs through the southwestern corner of this quadrangle. Subsidiary faults and igneous dikes were encountered in most of the mines in this area. The faults displaced the coal more than 10 feet in several locations. The dikes were over 20 feet wide in some areas, with naturally coked coal on either side. For more information on this fault system, see The Cottage Grove Fault System in Southern Illinois (ISGS Circular 522, 1981).
The earliest known mining in the Eldorado Quadrangle was in the early 1900s. Most of the mines operated in the Springfield Coal, which ranged from 4.5 to over 6 feet thick. The Herrin Coal was mined in the southeastern part of the quadrangle, generally by small underground mines and, more recently, by surface mines.
Map and Directory PDF Download
Coal Mines In Illinois Eldorado Quadrangle
Mines that Appear on the Eldorado Quadrangle
Unlocated Mines
Saline County
Pages in category "Eldorado Quadrangle"
The following 26 pages are in this category, out of 26 total.
Media in category "Eldorado Quadrangle"
The following 16 files are in this category, out of 16 total.
M0045 minenotes.pdf 745 × 1,183, 23 pages; 4.93 MB
M0046 minenotes.pdf 745 × 1,183, 18 pages; 3.59 MB
M0049 minenotes.pdf 745 × 1,183, 21 pages; 2.09 MB
M0125 minenotes.pdf 745 × 1,183, 52 pages; 11.13 MB
M0799 minenotes.pdf 745 × 1,183, 5 pages; 1.04 MB
M0800 minenotes.pdf 745 × 1,183, 10 pages; 2.12 MB
M0803 minenotes.pdf 731 × 1,172, 2 pages; 331 KB
M0983 minenotes.pdf 718 × 1,154, 29 pages; 5.78 MB
M1015 minenotes.pdf 731 × 1,172, 25 pages; 6 MB
M1028 minenotes.pdf 556 × 241, 5 pages; 979 KB
M1033 minenotes.pdf 756 × 1,208, 5 pages; 1.95 MB
M1038 minenotes.pdf 1,275 × 1,650, 5 pages; 4.22 MB
M1044 minenotes.pdf 560 × 302, 11 pages; 4.43 MB
M3296 minenotes.pdf 731 × 1,172, 5 pages; 1.01 MB
M3299 minenotes.pdf 731 × 1,172, 3 pages; 535 KB
M4702 minenotes.pdf 741 × 1,197, 2 pages; 581 KB