Abstract: A truck, a loading bridge, a sorting system for items being dispatched and a retrofit kit for a sorting machine for items being dispatched. In order to ensure that an item being dispatched can be removed in simple ways from the sorting machine for items being dispatched and transported to a further sorting step, the truck has a displaceable floor and the loading bridge has a driving device for the floor.

Abstract: A method of delivering proppant to a well site has the steps of transporting a load of proppant in a vessel to a desired location, moving the load of proppant from the vessel into a container so as to create a proppant-loaded container, unloading the proppant-loaded container into a pneumatic bulk trailer, and transporting the unloaded proppant in the pneumatic bulk trailer to well site. The container is placed onto a bed of a truck and moved in proximity to the vessel. The proppant-loaded container is placed onto a tilting mechanism and then tilted so that the proppant is discharged through a flow gate of a container into a hopper. The proppant in the hopper can then be conveyed to the pneumatic bulk trailer.