1. This causes compaction , a process in which grains mechanically reorganize. 2. A reduction in tillage passes helps prevent the compaction of soil. 3. O-glycosylation of H1 may promote chromatin condensation and compaction . 4. Compaction is through fiber tension and resin content is primarily metered.5. The mixtures may experience tenderness ( or pushing ) during compaction . 6. Vibratory compaction during the molding process tightly packs the aggregate together. 7. Soil disturbance and associated compaction result in conditions conducive to erosion. 8. Top soil compaction is considered partly reversible and its occurrence controllable. 9. Subsoil compaction is more difficult to be regenerated than topsoil compaction. 10. Subsoil compaction is more difficult to be regenerated than topsoil compaction .