A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Equipment and installation methods used for satisfactory suspension roof support in large diameter tunnel; results of experimental roof bolting in East Delaware tunnel, NY; 124,350 bolts installed have satisfactorily supported 65,187 lin feet of roof; no fatalities and no roof falls; saving in steel; increased efficiency. (see also abstract in Engineering n 4552 Apr 24 1953 p 539-40)
Equipment and installation methods used for satisfactory suspension roof support in large diameter tunnel; results of experimental roof bolting in East Delaware tunnel, NY; 124,350 bolts installed have satisfactorily supported 65,187 lin feet of roof; no fatalities and no roof falls; saving in steel; increased efficiency. (see also abstract in Engineering n 4552 Apr 24 1953 p 539-40)
Roof-bolting Delaware aqueduct
U S Bur Mines -- Information Cir
Platt, D.H. (author)
1952
9 pages
18 Suppl Plates
Report
English
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Roof-bolting Delaware aqueduct
| Engineering Index Backfile | 1953
Engineering Index Backfile | 1940
Engineering Index Backfile | 1942
| Engineering Index Backfile | 1953
| Engineering Index Backfile | 1952