Abstract: This invention enables the storage of several recyclable materials in a single container by providing a method of dividing ribs and an attachment method that attaches plastic bags to the ribs by the interaction between holes in a fastened flexible strip and projecting knobs located on the dividing ribs. The invention works to hold the bags best when a keyhole, or round, or oval hole is used and the strip is slightly stretched to fit over each projecting knob so that when the strip elastically rebounds after stretching it applies a force to the bag material that surrounds the projecting knob.

Abstract: This invention presents an improved way to determine, nondestructively, the composition of an unknown material sample such as, for example, a steel fastener of unknown standard grade. The procedure involves subjecting one end of a standard grade steel fastener of known length and weight to a pulse of heat and subjecting an identically-sized fastener of unknown grade to the equivalent or same conditions for an interval of time for the same finite length and comparing the time varying temperature pattern at the same heated ends of each fastener. The temperature of said locations can be monitored during the time heat is applied.