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Severe structural damage due to belated subsidence over shallow disused coal workings.

Artificial consolidation of shallow disused mine workings beneath a newly erected dwelling house

Ground collapse over long abandoned limestone shaft. Note the remains of a residential caravan within collapse.

Severe structural damage due to belated subsidence over shallow disused coal workings.

Ground collapse over shallow disused coal workings

Proving a long abandoned mine shaft within garden ground of existing property.

Mine workings and shaft consolidation works.

Collapse of ground over long abandoned mine shaft.