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Keywords:
EFFECT,
SUBSIDENCE,
COAL,
WORKINGS,
BRIDGES,
STRUCTURES,
MINING,
PILLARS,
RESERVOIRS,
LEAKAGE,
CRACKS,
RAILWAYS,
SETTLEMENT,
FRACTURE,
SEAMS,
FAULTS,
MINES,
EXCAVATIONS,
COLLIERIES,
COALFIELDS,
GERMANY
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© Thomas Telford and ICE
1899
