WITSML - Rig Shaker Component Schema Human recognizable context for the shaker. Manufacturer / supplier of the item. Manufacturers designated model. Date and time of installation. Removal date and time. Description for the type of object. Shaker location on rig. Number of decks. Number of cascade levels. Is part of mud cleaning assembly as opposed to discrete Shale Shaker. Values are "true" (or "1") and "false" (or "0"). Maximum pump rate at which the unit will efficiently operate. Contractor/owner. Minimum mesh size. An identification tag for the shaker. A serial number is a type of identification tag however some tags contain many pieces of information. This structure just identifies the tag and does not describe the contents. Unique identifier for the shaker.