Surface stability in areas ynderlain by old coal workings

Littlejohn, G.S.

Surface stability in areas ynderlain by old coal workings - 1979 - Ground Engineering March 1979, 22-30(6) .

Citation from CSM article `Detecting mineshafts using geophysical techniques` CSM:M 3(1) September 1993, 4-6. Stored on gallery.


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