has been developed which can be configured to perform in a variety of applications through the use of an adjustable rotor stator assembly removable shear bar and a variety of interchangeable stator rotor configurations a unique drive system utilizing a mechanical seal cartridge provides maximum sealing with a minimum of shaft deflection and run out thereby improving performance these improvements collectively allow the grinder to be configured for optimum sizing of solids to a predetermined particle size for a broad range of materials it has been demonstrated that a class of in line grinders such as that described herein is applicable for sizing drill cuttings for injection into a subsurface formation by way of an annular space formed in a wellbore the cuttings are removed from the drilling fluid conveyed to a shearing and grinding system that converts the cuttings into a viscous slurry with the addition of water and viscosity enhancing polymers the system in its simplest form comprises a slurry tank a pump and the instant in line grinder the pump circulates the mixture of cuttings and water between the slurry tank and the in line grinder the ground mixture leaving the in line grinder is then routed to an injection pump for high pressure injection into the formation application_number US 36310499 A description in the description which follows like parts are marked throughout the specification and drawing with the same reference numerals respectively the drawing figures are not necessarily to scale and certain features may be shown in schematic form in the interest of clarity and conciseness.