It is important to obtain cleanest sample when drilling for mining. The project requires obtaining samples from a location that represents the subsurface condition of the whole project site. The purpose of investigation determines the frequency and type of sampling. Different types of quality sample drilling techniques are used. Most mining exploration projects require latest and heavy-duty drilling machines. The power operated drilling systems operate fast and help get samples from deep under the ground on the same day. Samples collected at a few feet of intervals are collected and analyzed.
This drilling technique is also needed for landslide investigation and foundation preparation. Different types of drilling tools are available for various applications. Particular drilling tools and techniques are used depending on the purpose of drilling and the types of samples needed. Rotary drilling is preferred for obtaining rock cores, building horizontal drains, installing instruments and drilling probes.