Tunnel drill carriages -- Their economic possibilities
Jacketing a railway tunnel by mining methods
The lake superior and ishpeming railroad
Drill-carriage wings held up by toggle braces
Quebec, North Shore and labrador railway
Study on the Drilling Formation Selection and Risk Analysis of the Directional Drilling
Steel structural parts for aircraft
Visualising promises of material shipments
Study on the Impact of Stability around Tunnel Surrounding Rock in Construction Program
Large Cross Section of Very Loose Gravel Layer Inclined Construction Support Technology Research
Computer modeling when assessing the impact of road factors on performance of quarry vehicles
Nonlinear Mechanical Analysis of Polymer Precast Panel for Temporary Support of Tunnels