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opening up and the location of former chalk mines. The softness of chalk, as well as rain and erosion, has caused the ground in some places to collapse into the remnants of ancient chalk mines and tunnels.
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were dug into the chalk, allowing many miners to dig at the same time. Care had to be taken to avoid collapse, and places in which the chalk was soft were simply abandoned.
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130:"Subsidence & Collapse Geohazards: Chalk & Flint Mining"
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A link was reported in the United
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184:"The sinkhole truth: who's to blame – man or rain?"
88:and shovels were used to excavate tunnels. Stepped
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116:References
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38:, England
243:Category
104:See also
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74:Britain
45:is the
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67:bricks
63:cement
59:mining
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