Forensic Engineers and Consultants

Tag Archive: workplace injury

  1. Case Study of an Injury Involving a Soil Mixer

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    In May, 2014, a plant farm worker was seriously injured when he fell into the hopper of an electrically powered soil mixer.  The mixer in question used a rotating steel ribbon powered by a 7-1/2 hp electric motor to mix batches of materials such as sand, mulch, wood shavings, fertilizers and other landscaping materials to create potting soil. At the top of the hopper sidewalls, within 6 inches of the ribbon, was a steel grate. (more…)

  2. A Case Study in a Coal Mine: What are a Machine Rebuilder’s Responsibilities?

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    In November of 2010, a miner was injured by a roof bolting machine (roof bolter) in an Alabama underground coal mine. The roof bolter in question had undergone a complete rebuild intended to return the machine to the original equipment manufacturer’s (OEM’s) specifications. Warren was hired to analyze both the design of the roof bolter and the actions of the rebuilder to determine if either contributed to the unfortunate coal miner’s serious injury. Background information on coal mining and roof bolters, as well as an analysis of the roof bolter and the actions of the rebuilder are included. (more…)

  3. Hand and Finger Injuries from a Defective Snow Blower

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    Nearly everyone who lives in a snowy climate would agree that a gas powered snow blower beats a person powered snow shovel for clearing the sidewalk or driveway.  Shoveling heavy, wet snow causes injuries from back problems to heart attacks.  No wonder that gas powered snow blowers of all sizes are a popular item this time of year.  The larger ones may be ride-on types; smaller ones are typically walk-behind.  In either case there is an auger to gather the snow as the device moves forward and a bladed fan (or “blower”) to discharge it out of a chute to one side or the other.  (more…)

  4. Design Can Prevent Industrial Accidents

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    Two of the top causes of workplace accidents, according to the United States Department of Labor’s Occupation Safety and Health Administration, are a lack of machine guarding and improper control of hazardous energy. At first blush, these types of incidents can mistakenly be attributed to an employee’s actions without considering how a machine’s design or the improper control of an environment or situation may have contributed.
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  6. Machine Safeguarding for an Imperfect Workforce: Humans.

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    Every day more than 12 people in the United States lose their lives in workplace injuries, according to U.S. Department of Labor data. In 2011, OSHA estimates, 3.3 million people suffered a workplace injury from which they may never fully recover. Two of the top ten most frequently cited OSHA standards that result in injuries and death are lockout/tagout and machine guarding. (more…)

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