The invention is a modular backup and retrieval system. The promoter chemical replaces the standard petroleum sulfonate, glycol ether and nonphenol used in promoter chemicals with biodegradable substitutes permitting the waste from flotation separation to be disposed without fear of contamination of ground water. Each tension element includes a mechanical fuse operative to fail in tension when the first and second side elements supply an excessive tensile load to the tension element. A particularly useful application is the formation of stacked mass storage flash memory package. For example, the tab positions are changed and aligned in such a way that the tab positions vary sequentially from the start side of pages.