Mine Index 1018 Black Beauty Coal Company, Riola Mine

Mine Index Number: 1018

Company Name:	Black Beauty Coal Company
Mine Name:	Riola Mine
Start Date:	April 12, 1996	End Date:	June 9, 2006
Type of Mine:	Underground
Total acres shown:	1,853
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

Vermilion

18N 12W

33

SE NE NE

Air shaft

Vermilion

18N 12W

28

NE SE SE

Air shaft

Vermilion

18N 12W

28

SW SE SE

Geology

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

Herrin

251

4.5

5.8-6.8

RPP

Geological Problems Reported

Faults trending E-W were noted on the source map. Roof falls were relatively common, and were relatively large (size not given). The roof was generally silty shale and siltstone, with occasional fine sandstone beds that were 1 foot or more thick. At the base of the slope, shearing created an unstable roof that was difficult to support with roof bolting. In some instances, most of the movement along the shear was horizontal, but in other areas nearby and few feet up into the roof, the shearing dipped at various angles and trends, even along a single shear surface. There were numerous indications of soft sediment flow before complete lithification of the roof sediments or the coal. In the area at the slope bottom, the 5 foot mechanical bolts were supplemented with 8 to 12 foot resin bolts, often with “bacon strips”, thin metal bands attached to adjacent roof bolts to help support smaller pieces of roof rock. A clay dike was seen, although clay dikes are rare in the Herrin Coal. Rolls were large (across multiple entries) and mine plans were altered to leave pillars under them where possible. Pyrite and siderite in lenses and nodules were found. The lenses were up to 0.2 feet thick and more than 1 foot in diameter. The sulphur content was generally less than 2%.

Production

Company

Mine Name

Date

Production (tons)

Catlin Coal Company (add)	Riola (add)	1996-1998	1,553,745

Black Beauty Coal Company (add)	Riola (add)	1999-2006	6,905,132

Total Production: 8,458,877

Production Notes

Coal Report production (if available)

Sources of Data

Source Map

Map Date

Original Scale

Digitized Scale

Map Type

Company, 6-424

6-9-2006

1:6000

1:6000

Final

Annotated Bibliography (Data source - brief description of information)

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

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

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

Company map, Coal Section files, 6-424 - Slope & shaft locations, mine outline, mining method, geologic problems.