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Trenching & Shoring Safety in Construction DVD Language:English xo-ex-audience-grid{ display:gridTrenching & Shoring Safety in Construction DVD Preview Features On average two workers are killed in a month due to collapsing trenches. Teach your employees about the hazards of working in a trench and what they can do to help prevent an injury or fatality. 30 Day Money Back Guarantee Trenching & Shoring Safety in Construction DVD Topics Learn about the hazards of trenching Know what a "competent person" is and what the are responsible for Know what
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