Mine Index 0909 Sahara Coal Company, Inc., Sahara No. 20 Mine

Mine Index Number: 0909

Company Name:	Sahara Coal Company, Inc.
Mine Name:	Sahara No. 20 Mine
Start Date:	1969	End Date:	May 1983
Type of Mine:	Underground
Total acres shown:	1,200
Acres after map date:		General Area of mining acres shown:

Shaft, Slope, Drift or Tipple Location(s)

Type	County	Township-Range	Section	Part Section

Main slope

Saline

9S 5E

10

SE NW SW

Air shaft

Saline

9S 5E

10

SW SW NW

Geology

		Thickness (ft)
Seam	Depth (ft)	Min	Max	Ave	Mining Method

Springfield

223

4.0

10.0

4.58-5.83

RPP, HERThe source map shows what appears to be some pillar removal in the south half of 9-T9S-R5E.

Geological Problems Reported

Faulting throughout the mine displaced the coal bed in many areas. The amount of displacement was not specified in the ISGS mine notes nor on the source map. In general, the roof was good, but the source map shows “bad top” that apparently halted southward expansion in the southwest quarter of 9-T9S-R5E. Bad top was also a problem in a small area in the NE SW 9-T9S-R5E. Some areas of the mine also displayed rolls.

Production

Company

Mine Name

Date

Production (tons)

Sahara Coal Company, Inc. (add)	Sahara No. 20 (add)	1969-1983	5,586,580
Total Production: 5,586,580

Production Notes

Coal Report production (if available)

Sources of Data

Source Map

Map Date

Original Scale

Digitized Scale

Map Type

Company, 10-5-55

6-1983

1:1200

1:1200

Final

Annotated Bibliography (Data source - brief description of information)

Coal Reports - Production, ownership, years of operation, depth, thickness.

Directory of Illinois Coal Mines (Saline County) - Mine names, mine index, ownership, years of operation.

Mine notes (Saline County) - Mine type, slope location, seam, thickness, geologic problems.

Company map, ISGS Coal Section files, 10-5-55 - Shaft and slope locations, mine outline, mining method, geologic problems.