WWI trench-digging machine.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
Previously:
WWI mechanical trench-digging machine - GIF
Belt-driven tractor with giant trenching wheel - GIF
V-trenching excavator - GIF
Trenchless V-plow pipe layer
1954 Fordson Major trencher with Rotopad tracks
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