A method for avoiding using CMP for eliminating electroplated copper facets and reusing barrier layer in the back end of line manufacturing processes. More particularly, improved techniques for distributing large payouts with minimal interruption of a gaming session at a gaming apparatus are disclosed. A first-level alarm condition is triggered in response to a pressure drop in the system to less than or equal to a specified system pressure and pauses fluid flow in at least a portion of the system. Each of the tasks represents one or more operations that are configured to access one or more elements. Apparatus suitable for use in preparing extracts of natural products are also described.