Jeffrey L. Beck

Rotary drillstring guidance by feedrate oscillation

Vortex injection dredging apparatus and method

Vortex injection method and apparatus

Slurry concentration and dilution apparatus

Apparatus for the reclamation of slurry from the bottom of a storage silo

Adjustable vortex classifier

Pressure dissipation apparatus

Injection of solids into a high pressure slurry stream

Slurry concentration apparatus

Apparatus for the control for injection of dry solids into a high pressure fluid stream