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A platform for research: civil engineering, architecture and urbanism
Neuere betriebsergebnisse ueber den moll'schen streckenausbau
Experience with Moll supports; difficulties experienced with roof of 3 1/4-3 3/4-ft seam; material is brittle slate clay, forming Trompeter zone 16 to 20 ft in height; satisfactory control of roof conditions effected by use of Moll system of curved steel supports; small saving in first cost and large saving in maintenance, compared with timber frames. (English Abstract) (See also Bergbau v 46 n 4 Feb 16 1933 p 47-51)
Neuere betriebsergebnisse ueber den moll'schen streckenausbau
Experience with Moll supports; difficulties experienced with roof of 3 1/4-3 3/4-ft seam; material is brittle slate clay, forming Trompeter zone 16 to 20 ft in height; satisfactory control of roof conditions effected by use of Moll system of curved steel supports; small saving in first cost and large saving in maintenance, compared with timber frames. (English Abstract) (See also Bergbau v 46 n 4 Feb 16 1933 p 47-51)
Neuere betriebsergebnisse ueber den moll'schen streckenausbau
Colliery Guardian
Pfeifer, F. (author)
Colliery Guardian ; 10
1933
Article (Journal)
English
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Neuere Betriebsergebnisse ueber den Moll'schen Streckenausbau
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