The Use of Steel Arches in Supporting Underground Roadways
THE coal-mining industry of Nova Scotia, particularly of the island of Cape Breton, today faced as no other industry with economic problems calling for progressive engineering with production on an economic basis, must soon enter upon a phase of reorganization wherein all factors conducive to the cost of producing coal relative to the prolongation of the life of the collieries with the ultimate winning of the maximum submarine area must be closely reviewed.
Mots Clés:
Arches, Cost, Costs, Great Britain, longwall, parabola, steel, STRATA ( C), Pressure, Roadways, steel, Steels, Support, Supports
