Ken Throgmorton carefully places his fingers on a joystick console attached at his waist and calls to his crew.
“I’m going up on it! OK, ready? Say when!” he calls out.
And with the slight maneuver from his hands, a 5-inch pipe of concrete springs to life, pumping material that will become concrete pads in a mechanical room at the new Springfield High School building. Around him, his crew moves quickly to place and smooth the pour.
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