Mine Index 0311 Coronado Coal Mining Company, Coronado Mine

Mine Index Number: 0311

Company Name:	Coronado Coal Mining Company
Mine Name:	Coronado Mine
Start Date:	1905	End Date:	1911
Type of Mine:	Underground
Total acres shown:	20
Acres after map date:		General Area of mining acres shown:	62

Shaft, Slope, Drift or Tipple Location(s)

Type	County	Township-Range	Section	Part Section

Main shaft 7 ft x 14 ft

Sangamon

16N 3W

26

NW NE NE

Air shaft 7 ft x 14 ft

Sangamon

16N 3W

26

NW NE NE Mine notes state that the air shaft was 346 feet north of the main shaft. The air shaft is not shown on the accompanying map, because the source map used for the shaft and mine outline is quuite generalized and does not warrant extrapolations.

Geology

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

Springfield

305

5.58

RP

Geological Problems Reported

The roof consisted of clod that was not always present but could be up to 4 feet thick, and black shale up to 6 inches thick. Two pyrite-rich layers were present in the coal.

Production

Company

Mine Name

Date

Production (tons)

Mechanicsburg Coal Company (add)	Mechanicsburg No. 2 (add)	1905-1909	51,919

Coronado Coal Mining Company (add)	Coronado (add)	1909-1911	37,921

Total Production: 89,840

Production Notes

Coal Report production (if available)

Sources of Data

Source Map

Map Date

Original Scale

Digitized Scale

Map Type

Federal Land Bank Report

2-1934

1:158400

1:158400

Secondary source

Annotated Bibliography (Data source - brief description of information)

Coal Reports - Production, ownership, years of operation, shaft sizes, mining method.

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

Mine notes (Sangamon County) - Mine type, shaft location, seam, depth, thickness, geologic problems.

Federal Land Bank Report (Sangamon County) - Shaft location, mine outline.