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2. Underground rocket - Wikipedia

   en.wikipedia.org/wiki/Underground_rocket

   An underground rocket or rocket drill is a device for rapidly drilling holes through soil and rock of varying composition at rates up to 1 metre per second [1] [2] by utilising supersonic jets of hot gases. It was developed by Russian engineer Mikhail Tsiferov in 1948.

3. Boring (earth) - Wikipedia

   en.wikipedia.org/wiki/Boring_(earth)

   Boring is drilling a hole, tunnel, or well in the Earth. It is used for various applications in geology, agriculture, hydrology, civil engineering, and mineral exploration. Today, most Earth drilling serves one of the following purposes: return samples of the soil and/or rock through which the drill passes; access rocks from which material can ...

4. Underground pneumatic boring - Wikipedia

   en.wikipedia.org/wiki/Underground_pneumatic_boring

   Pneumatic drill tools do have drawbacks which can cause difficulties completing the bore. First, the distance of the drill is limited by the length of the hose that supplies the tool with air. Also, the tool is not steerable. Once it has exited the bore pit, the operator no longer has control over it.

5. Drifter drill - Wikipedia

   en.wikipedia.org/wiki/Drifter_drill

   A drifter drill, sometimes called a rock drill, is a tool used in mining and civil engineering to drill into rock. Rock drills are used for making holes for placing dynamite or other explosives in rock blasting, and holes for plug and feather quarrying. [1] While a rock drill may be as simple as a specialized form of chisel, it may also take ...

6. Directional boring - Wikipedia

   en.wikipedia.org/wiki/Directional_boring

   Directional boring machine. Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.

7. How a Drill Inspired the Music of ‘The Underground Railroad’

   www.aol.com/entertainment/drill-inspired-music...

   Composer Nicholas Britell recalls receiving an audio message from director and writer Barry Jenkins with no words or description to accompany it, just a drilling sound. “He didn’t even need to ...

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Drilling jumbo - Wikipedia

   en.wikipedia.org/wiki/Drilling_jumbo

   A drilling jumbo consists of one, two or three rock drill carriages, sometimes a platform, which the miner stands on to load the holes with explosives, clear the face of the tunnel or do something else. [further explanation needed] The carriages are bolted onto the chassis, which supports the miner's cabin as well as the engine. Although modern ...