A down-the-hole Drilling Rig (DTH rig) is a powerful piece of mining equipment designed for deep rock penetration by hammering directly at the drill bit location. It’s commonly used in hard rock drilling applications, such as open-pit mines, quarries, and underground development.
[pdf] Surface drilling rigs are hydraulic drill rigs typically designed for small to medium-scale quarries and small-sized open pit mines, suitable for rock drilling applications where rock hardness exceeds F10 in aggregate quarrying, civil engineering, road construction, open pit mining, hydropower plant construction and other blasthole drilling projects.
[pdf] Sandvik in-the-hole (ITH) longhole drills are capable of drilling ø89-216 mm holes up to 100 meters in length using 3” to 8” ITH hammers in mechanized and automated underground mining operations.
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