Mine Index 0657 Wilmington Coal Mines, Inc., Wilmington No. 4 Mine

Mine Index Number: 0657

Company Name:	Wilmington Coal Mines, Inc.
Mine Name:	Wilmington No. 4 Mine
Start Date:	1913	End Date:	1941
Type of Mine:	Surface
Total acres shown:	144
Production Indicated Acres:	65Other operators may have mined these pits (see the unlocated mines at the back of this report).	General Area of mining acres shown:

Shaft, Slope, Drift or Tipple Location(s)

Type	County	Township-Range	Section	Part Section

Tipple

La Salle

33N 4E

9

NW SE SW

Pit

La Salle

33N 4E

8

SW NW NW

Geology

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

Colchester

25

2.17-2.5

Surface

Geological Problems Reported

Concretions were found near the top of the coal seam. The upper 2-3 inches of the coal contained pyrite bands and a persistent gypsum band.

Production

Company

Mine Name

Date

Production (tons)

National Fire Proofing Company (add)	Pioneer (add)	1913-1934Idle 1919, 1926, 1931 and 1934. Production not reported in 1922 for mines producing less than 10,000 tons. Production not reported 1930-1933 for mines producing less than 1,000 tons per year, so National Fire Proofing Comapny may have had low production in 1931 instead of being idle.	49,171

Wilmington Coal Mines, Inc. This mine also operated under the name McElvain Coal & Mining Company, but did not report under that name. (add)	Wilmington No. 4, Echo (add)	1935-1941	189,711

Total Production: 238,882

Production Notes

Coal Report production (if available)

Sources of Data

Source Map

Map Date

Original Scale

Digitized Scale

Map Type

Company, 6-261d

7-7-1941

1:31680

1:31680

Final

Coal Section files

Undated

1:62500

1:62500

Secondary source

USGS topographic map

1994

1:24000

1:24000

Secondary source

Annotated Bibliography (Data source - brief description of information)

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

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

Mine notes (La Salle County) - Mine location, seam.

ISGS field notes (La Salle County) - Geologic problems.

Company map, Coal Section files 6-261d - General pit location (no coordinates to register the mine to land surface).

Coal Section files, data sketched onto USGS Ottawa (15-minute) Quadrangle - Tipple location, general pit location.

Ottawa Quadrangle, USGS 7.5-minute topographic map, 1994 - Mine outline.