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Using these Tables effectively requires basic level training in ergonomics and manual handling task analysis and evaluation. Users should be knowledgeable Manual. Materials Handling. Using the Liberty Mutual tables to evaluate these tasks ergonomics and manual handling task analysis and evaluation.Manual Handling Guidelines: Using Liberty Mutual Tables. Tables for evaluating lifting, lowering, pushing, pulling, and carrying tasks. This manual material handling analysis online tool provides both the male and female population percentages capable of performing manual material handling tasks The Liberty Mutual MMH Tables (commonly known as “Snook Tables”) outline Many jobs require a wide variety of manual handling tasks (lifting, lowering,. Liberty Mutual Tools for Assessing Manual Material Handling Risk the Liberty Mutual tables (libertymmhtables.libertymutual.com/CM_LMTablesWeb/.