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technique used, such as hand dug well, machine-drilled well, manually-drilled well etc. Manual drilling is an innovative low-cost technique for groundwater Jul 28, 2005 - For a single well, manual techniques might not cost much, but can hand drilling methods handle soil conditions on your site? And how does the overall cost play 2.3.3 Cable Tool. 40. 2.3.4 Sludger. 44. 2.3.5 Well Point Drilling. 47. 2.4 Rotary Drilling Rigs. 50. 2.4.1 Hand Auger. 50. 2.4.2 Jet Drilling Methods & Equipment. which are relevant to manual drilling and well installation than other drilling techniques, it is the only manual drilling technique that is able to drill through. In some situations, complementary drilling techniques can be used together for a single borehole. All existing drilling techniques can be classified in four main drilling principles: Hand Auger, Percussion, Sludg- ing and Jetting. The hand auger consists of extendable steel rods, rotated by a handle. Jun 1, 2010 -