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A platform for research: civil engineering, architecture and urbanism
"Ferromatic" hydraulic prop
"Ferromatic" hydraulic support system comprises complete range of hydraulic supports; including props, chocks, powered supports and power packs; prop differs from most others in that it employs system of hydraulic injection; 2 normal props will be constructed for maximum yield loads of 25 and 40 tons as well as special prop for very thick seams with yield load of 30 tons; construction, hydraulic system, operation, application and maintenance. (see also Colliery Eng v 38 n 454 Dec 1961 p 540, 541-3; Steel and Coal v 184 n 4882 Feb 9 1962 p 267-9)
"Ferromatic" hydraulic prop
"Ferromatic" hydraulic support system comprises complete range of hydraulic supports; including props, chocks, powered supports and power packs; prop differs from most others in that it employs system of hydraulic injection; 2 normal props will be constructed for maximum yield loads of 25 and 40 tons as well as special prop for very thick seams with yield load of 30 tons; construction, hydraulic system, operation, application and maintenance. (see also Colliery Eng v 38 n 454 Dec 1961 p 540, 541-3; Steel and Coal v 184 n 4882 Feb 9 1962 p 267-9)
"Ferromatic" hydraulic prop
Colliery Guardian
Colliery Guardian ; 203
1961
6 pages
Article (Journal)
English
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