Highway 7 - Kitchener to Guelph

[jamincan]

https://en.wikipedia.org/wiki/Directional_boring

Directional boring, commonly called horizontal directional drilling or HDD, is a steerable trenchless method of installing underground pipe, conduit, or cable in a shallow arc along a prescribed bore path by using a surface-launched drilling rig, with minimal impact on the surrounding area. Directional boring is used when trenching or excavating is not practical. It is suitable for a variety of soil conditions and jobs including road, landscape and river crossings.

Oh, I know that horizontal drilling is a thing, but I imagine that the diameter of the bore would be larger than you would typically see drilled. That's why I was wondering about reaming. I know that they use the technique for placing vertical shafts in mines, but I had never heard of it being used in horizontal drilling. Now that I'm home, cursory searches seem to suggest that reaming a horizontal hole in soil is possible.