A system for preparing a slurry in-transit including a first cuttings storage vessel disposed on a transport vehicle, a module configured to operatively connect to the first cuttings storage vessel, and a fluid supply line in fluid communication with the first cuttings storage vessel, the module including, a grinding device configured to facilitate the transfer of fluids and reduce particle size of drill cuttings, wherein the system is operated while the transport vehicle is moving. A method of operating an in-transit slurrification system including using a first vessel disposed on a moving transport vehicle for cuttings storage, and operating the first vessel in a slurrification process while the transport vehicle is moving.