1946 hand-built trenching machine - video

[Altair]

Hand-built trenching machine. The machine can dig a trench 8 feet deep and 10 inches wide and, depending on the soil, could advance itself at a rate of 15 to 20 feet per hour. The trencher was restored to working condition in 2003 and is now housed at the Pioneer Acres Museum in Irricana, Alberta.

Previously:

WWI mechanical trench-digging machine - GIF
V-trenching excavator - GIF
Belt-driven tractor with giant trenching wheel - GIF