- By the analysis of forces, the design principle for indexable drills for shallow holes is put forward.
- As a result,the short hole shrinkage method with flat bottom structure was employed to mine the stope firstly,then stoping ore pillar by medium length hole caving method.
shallow lob shallow shallow spherical sandwich shell Shallow Buried and Deep Excavated shallow unsymmetrical load tunnel Shallow talk that the merchandise Shallow streams make most dins. Shallow Seismic Refraction Survey shallow open-cut surface mining Shallow strreams make most din. Shallow artificial seismicprofile Shallow Underwater Missile System