Mine Index 0974 Monterey Coal Company, Monterey No. 2 Mine

Mine Index Number: 0974

Company Name:	Monterey Coal Company
Mine Name:	Monterey No. 2 Mine
Start Date:	1977	End Date:	July 19, 1996
Type of Mine:	Underground
Total acres shown:	7,565
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

Clinton

1N 5W

13

NW SW SE

Air/escape shaft

Clinton

1N 5W

13

SE SE SW

Air shaft

Clinton

1N 5W

13

SE SW SW

Geology

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

Herrin

330

6.0-7.0

BRP

Geological Problems Reported

Most of the roof was black Anna Shale, with a series of slips that made an unstable roof. Pods of gray shale roof also had large slips that weakened the roof. Roof falls were generally minor, as bolting to limestone (30 inches to 17 feet up) was the common practice. Some of the bolts failed nine years later, and the source map shows numerous roof falls. Rolls were reported where both the top was lowered and the bottom was raised. At least one large clay dike was present, which pinched out in about the middle of the seam. A large clay dike fault was present, with a throw of about 5 feet, with another series of parallel slips that seriously weakened the roof. The source map shows several faulted areas with 5 to 10 feet of displacement. Gas emission was high on the freshly-mined face. Partings in the seam were present in the northern and eastern parts of the mine that resulted in a product with a high reject rate relative to the coal in the rest of the mine.

Production

Company

Mine Name

Date

Production (tons)

Monterey Coal Company (add)	Monterey No. 2 (add)	1977-1996	46,677,010

Total Production: 46,677,010

Production Notes

Coal Report production (if available)

Sources of Data

Source Map

Map Date

Original Scale

Digitized Scale

Map Type

Company, 6-334

8-9-1996

1:4800

1:4800

Final

Annotated Bibliography (Data source - brief description of information)

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

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

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

Company map, Coal Section files, 6-334 - Mine outline, shaft locations, mining method, geologic problems.