The items listed provide the engineer with an economic range of equipment for field survey work. Using this equipment it is possible to obtain disturbed or undisturbed samples at reasonable depths subject to ground conditions. Most items may be inter-connected. This auger heads are suitable for boring in cohesive soils or sands and gravels. The soil augers are constructed of heavy-duty steel plates forming an open tube party interlocked at the cutting end. Gravel augers comprise a one-piece steel casting with a spiral point and two plates designed to close when lifting samples from the borehole. The Dutch Auger is of similar construction to the Soil Augers and is particularly useful in very fine silty-clayey sands.