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GB952048A
|
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Bricklaying machine for use in lining underground galleries
|
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GB951530A
|
|
Bricklaying device for lining underground galleries
|
|
GB763991A
|
|
Improvements in or relating to the lining of mining shafts, galleries and tunnels
|
|
US2057524A
|
|
Wall construction for tunnels, shafts, and pipe
|
|
GB421822A
|
|
Improvements in or relating to supporting structures for mine galleries, shafts, tunnels and the like
|
|
GB382473A
|
|
Improvements in or relating to the moulding of blocks, slabs or like articles from cement or concrete or the like
|
|
GB282835A
|
|
Improvements relating to mine shaft or mine gallery linings
|
|
GB297557A
|
|
Improvements relating to mine shaft or mine gallery linings
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