Mining system
Patent
·
OSTI ID:5506157
Coal in the roof of a seam being mined by the long wall method is recovered by supporting an elongated area of the seam roof using a plurality of cradle supports, the front cradles being moved forward stepwise parallel to the long wall to form a passage with cantilevered roof supporting arms of the rear cradles. When the rear cradle at one end of the passage is moved forward into engagement with the front cradles, the coal in the roof is left unsupported, is collapsed, and is removed via a conveyor and a loader in the passage.
- Assignee:
- EDB-84-019811
- Patent Number(s):
- US 4411559
- OSTI ID:
- 5506157
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CANADA
COAL DEPOSITS
COAL MINES
COAL MINING
COAL SEAMS
DESIGN
EQUIPMENT
GEOLOGIC DEPOSITS
LONGWALL MINING
MECHANICAL STRUCTURES
MINERAL RESOURCES
MINES
MINING
MINING EQUIPMENT
NORTH AMERICA
POWERED SUPPORTS
RESOURCES
ROOFS
SUPPORTS
UNDERGROUND FACILITIES
UNDERGROUND MINING
012000* -- Coal
Lignite
& Peat-- Mining
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CANADA
COAL DEPOSITS
COAL MINES
COAL MINING
COAL SEAMS
DESIGN
EQUIPMENT
GEOLOGIC DEPOSITS
LONGWALL MINING
MECHANICAL STRUCTURES
MINERAL RESOURCES
MINES
MINING
MINING EQUIPMENT
NORTH AMERICA
POWERED SUPPORTS
RESOURCES
ROOFS
SUPPORTS
UNDERGROUND FACILITIES
UNDERGROUND MINING