Limited Access drills are commonly used for areas where conventional drilling equipment can not access. They are also used in areas with low overhanging canopy's (gas station, etc. ) and also used for indoor drilling applications like warehouses, garages and basements.
[pdf] But here is the silver lining: cheap, affordable geotechnical drilling rigs are plentiful and price with performance. In this buyer's guide, you will learn important considerations in choosing the best geotechnical rigs for small contractors and cost-effective soil testing strategies.
[pdf] Core drilling is a method of drilling that involves using a special drill bit and drill to remove a cylindrical core of material. This technique is often used in construction and other industries to create holes.
[pdf] 
