Geothermal dig and loop field installation - I use my Kubota KX080 excavator to move 400 yards of dirt so we could install a geothermal loop trench field. I also had my Bobcat T66 on site to help move material. This is a 4 ton system so there's four slinky coils going in. The coils go on a bed of stone dust and a layer of stone dust also covers the coils. I pressure test and bubble test all the fusion joints. Early on one of the trench walls collapsed, luckily it wasn't that bad and only happened once.