During the 1920s, trench digging was transformed from back-aching hand labor to mechanized continuous operation by several enterprising individuals who invented and marketed specialized trenching ...
PITTSBURGH, April 11, 2025 /PRNewswire/ -- "I needed to dig a trench for a water line connection and didn't want to rent a trencher machine," said an inventor, from Saucier, Miss., "so I invented the ...
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