IMPROVED STORAGE AND RETRIEVAL SYSTEMS

Disclosed is a method of presenting retrieved storage units from a storage system to an entrance or intake point of a working station in a sequenced manner, said method comprising:(a) having a gridded three-dimensional structure comprising:a gridded track layout that occupies a two-dimensional area and on which one or more storage/retrieval vehicles are conveyable in two directions over said two-dimensional area; anda plurality of storage columns residing above or below the gridded track layout in spaced distribution within the two-dimensional area of said track layout, each column comprising a plurality of storage locations arranged one over another and sized to accommodate placement and storage of storage units therein; anda plurality of upright shafts residing above or below the gridded track layout in spaced distribution over the two dimensional area of said track layout, each storage column being neighboured by a respective one of the upright shafts through which the storage locations of said storage column are accessible by the one or more storage/retrieval vehicles to place or remove the storage units to or from said storage locations of said storage column;(b) having the storage/retrieval vehicles retrieve respective storage units designated for delivery to the working station from respective storage locations; and(c) within said gridded three-dimensional structure, orchestrating sequenced delivery of the retrieved storage units to the entrance or intake point of the working station.