Mining engineeringW
Mining engineering
Blasting matW
Blasting mat
Elgin Bryce HoltW
Elgin Bryce Holt
Mining Research and Development EstablishmentW
Mining Research and Development Establishment
Plasma deep drilling technologyW
Plasma deep drilling technology
Rock mechanicsW
Rock mechanics
Shaft sinkingW
Shaft sinking
Philip DeidesheimerW
Philip Deidesheimer
Triaxial shear testW
Triaxial shear test