- The employer dispatched employees to a power house on a river to install a new microwave dish and communications cable and remove the old one. Two workers arrived, carrying a portable ladder for access to the elevated location about 20 feet above the floor, where the cable entered the wall. They were using a 12-foot wooden ladder. To reach the switch gear, they placed the ladder on a 1/4-inch thick transite protective cover that rested on a 2-1/2-foot wide by three-foot deep wooden box abo
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